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Heezy1323

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  1. Heezy1323
    Im sure most here are aware that Royce Lewis strained his hamstring last night during the Twins vs. Reds game. It looked like he may have been a bit hobbled running to first earlier in the game, but returned to hit in the 8th inning. During the at bat, he appeared to aggravate the hamstring and had to leave the game. The Twins are calling this a day-to-day injury at this point.
     
    In 2018, Dr. Chris Camp (the Twins Head Team Physician) and others published the following report:

     
    This article and it's appendices give us great information about a wide range of different injuries to MLB and MiLB players over a period of several years. The injuries in this article span from 2011-2016 (as noted above), so there may be some changes over the past handful of seasons. But I believe the information is still relatively valuable.
    Here is what it has to say about Hamstring Strains (which happen to be the #1 most common injury during this time period):

     
    You can see the mean number of days missed is 14.5, with the median at 9. The majority of these occur while running (56%).
     
    Here is some additional context:

     
    Certainly unfortunate for Lewis and the Twins. The have 13 days until a likely playoff opener on 10/3. Let's cross our fingers and hope Royce is ready to go.
     
    (Cover photo credit Jeff Dean, Associated Press)
  2. Heezy1323
    Rich Hill Elbow Surgery Discussion
    Heezy 1323
     
    Happy Supposed-To-Be Opening Day everyone. Since the baseball season is (unfortunately) on hold due to the coronavirus pandemic, about the only recent baseball-related news to report has been that both Chris Sale and Noah Syndergaard (in addition to Luis Severino earlier this spring) are in need of Tommy John surgery. I covered some information about Sale’s injury and some discussion regarding techniques used in UCL reconstruction in previous blog posts. In the comment section of the latter post, TD user wabene asked an astute question about Rich Hill’s surgery and how it is similar or different from typical UCL reconstruction. Hill’s surgery is indeed different from a typical Tommy John surgery, and I thought a post about it might be interesting to some readers.
     
    As usual, my disclaimer: I am not an MLB team physician. I have not seen or examined Hill or reviewed his imaging studies. I am not speaking on behalf of the Twins or MLB. I am only planning to cover general information about this type of surgery and my take on what it might mean.
     
    Twins Daily contributor Lucas Seehafer posted an excellent article about Hill’s surgery back in January that was a good look into the surgery basics and some background about UCL primary repair. There was some additional discussion in the comments as well. Since Lucas did such a nice job covering the surgery, I won’t go into excessive detail in this post, but I’ll give my version of the basics, and then cover how Hill’s surgery is similar and different.
     
    Basics of UCL Primary Repair
     
    As covered in my post about Sale, the UCL is a strong ligament at the inside of the elbow that resists the stretching forces that occur when trying to throw a baseball. Obviously, hurling a baseball 90+ mph can take a toll on this ligament and it can, in some cases, result in a tear. These tears can occur at the top (humeral) end, bottom (ulnar) end or in the middle (called midsubstance).
     


     
    The figure above is from a study we did when I was in fellowship indicating the location of the ligament injury in 302 patients who had undergone surgery with Dr. Andrews. The most common areas of injury are at either end of the ligament, with the humeral end being slightly more common (at least in this series) than the ulnar end. These patients all underwent UCL reconstruction, which is the standard operation to treat these injuries when non-surgery treatments have failed to result in adequate improvement.
     
    More recently (I would say within the past 5-7 years), there has been emerging interest in performing a different operation for a subset of these patients called UCL Primary Repair. This operation differs from UCL Reconstruction in that when the repair is chosen, the injured ligament is reattached back to the bone at the site of the injury using special anchors. There is typically also a strong stitch called an ‘internal brace’ that is passed across the joint along the path of the repaired UCL as well. I often refer to this internal brace as a ‘seat belt’ stitch. The idea behind the internal brace is that early in the healing process, before it has re-developed strong attachments to the bone, the ligament is susceptible to reinjury which could cause failure to heal (or compromised strength of healing). The internal brace (theoretically) helps protect the healing ligament and allows for development of a stronger attachment back to the bone. Once healing has occurred, the internal brace is thought to act like ‘rebar’, adding some strength to the ligament (though the exact magnitude of this contribution is unclear).
     


     
    This figure illustrates the repair technique with the blue ‘internal brace’ also in place.
     
    This is different from UCL reconstruction, where tissue from elsewhere in the body (typically either a forearm tendon called palmaris or a hamstring tendon called gracilis) is passed through bone tunnels and used to create a ‘new’ ligament.
     
    One of the reasons for the interest in primary repair of the UCL has to do with the length of time needed for recovery from UCL reconstruction. As many of us know from having watched numerous pitchers undergo (and subsequently return from) Tommy John surgery, there is usually around 12-18 months needed for full return to pitching at the major league level. There are a number of reasons for this long time frame, but a major contributor is that this is the amount of time needed for the graft to fully heal. Recall, we are taking a tendon (which normally attaches muscle to bone) and putting it in the place of a ligament (which normally attaches one bone to another bone). Though tendons and ligaments are similar, there are differences in their microscopic structure. Over time, as the graft starts to heal and have new stresses placed on it (namely throwing), it begins to change its microscopic structure and actually becomes a ligament. In fact, there have been animal studies done that have shown that a biopsy of a sheep ACL graft (which was originally a tendon) over time evolves into what is nearly indistinguishable from a ligament. We call this process ‘ligamentization’, and it is probably the most important part of what allows the new ligament to withstand the stresses of throwing.
     
    This process, however, takes time. And because of this, the recovery from UCL reconstruction is lengthy. With primary repair of the UCL, this process of conversion of the tendon to ligament is not necessary since we are repairing the patient’s own ligament back to its normal position. Some healing is still required; namely the healing of the detached ligament back to the bone where it tore away. But this process does not typically require the same amount of time as the ligamentization process.
     
    So why, then, wouldn’t everyone who needed surgery for this injury just have a primary repair? In practice, there are a few issues that require consideration when choosing what surgery is most suitable for a particular athlete. The first brings us back to the first graph from this post regarding location of injury to the UCL. It turns out that asking an injured ligament to heal back to bone is a much different thing than asking a torn ligament to heal back to itself. Specifically, trying to heal a tear in the midsubstance of the UCL (which requires the two torn edges of the ligament to heal back together) results in a much less strong situation than a ligament healing to bone. That makes those injuries that involve the midsubstance of the UCL (about 12% in our study) not suitable for primary repair. It can only be realistically considered in those athletes who have an injury at one end of the ligament or the other.
     


     
    In addition, there is significant consideration given to the overall condition of the ligament. One can imagine that repairing a nearly pristine ligament that has a single area of injury (one end pulled away from the bone) is a different situation than trying to successfully repair a ligament that has a poorer overall condition. Imagine looking at a piece of rope that is suspending a swing from a tree branch- if the rope is basically brand new, but for some reason breaks at its attachment to the swing, it seems logical that reattaching the rope to the swing securely is likely to result in a well-functioning swing with less cause for concern about repeat failure. Conversely, if you examine the rope in the same situation and notice that it is thin and frayed in a number of places, but just happened to fail at its attachment to the swing, you would be much less likely to try and repair the existing rope. More likely, you would go to the store and buy a new rope to reattach the swing (analogous to reconstruction). Similarly, when we are considering surgical options, we examine the overall health of the ligament on the MRI scan, and also during the surgery to determine whether repair is suitable or whether a reconstruction is needed. If there is a significant amount of damage to the UCL on MRI, primary repair may not be presented to the athlete as an option.
     
    Also, consideration is given to the particulars of an athlete’s situation. For example, let’s say I see a high school junior pitcher who has injured his elbow during the spring season. Let’s also say that he wants to return to pitching for his senior year but has no interest in playing baseball competitively beyond high school. In this case, the athlete is trying to return relatively quickly (the next spring) and is not planning to place long term throwing stress on the UCL beyond the next season. If this athlete fails to improve without surgery (such that all agree a surgery is needed), and his MRI is favorable- he is a good candidate for UCL primary repair. This would hopefully allow him to return in a shorter time frame (6-9 months) for his senior season, which would not be possible if a reconstruction was performed. Indeed, this is the exact type of patient that first underwent this type of surgery by Dr. Jeff Dugas at American Sports Medicine Institute in Birmingham, AL. Dr. Dugas is a protégé of Dr. James Andrews and has been instrumental in pioneering the research behind UCL primary repair.
     
    As you can probably imagine, the longer players (and pitchers in particular) play baseball, the more likely it is that there is an accumulation of damage to the UCL over time. This is the factor that most commonly eliminates the option of primary repair of the UCL in many of these players.
     
    So how does any of this relate to Twins pitcher Rich Hill? Let’s discuss.
     
    Hill underwent UCL reconstruction of his left elbow in 2011. He was able to successfully return from his surgery but has certainly faced his share of injury concerns since then (as described nicely in Lucas Seehafer’s article). This past season he began to have elbow pain once again and was placed on the 60-day IL as a result. He then underwent surgery on the elbow in October 2019 by Dr. Dugas (noted above). The procedure performed was a repair procedure, but in this case instead of repairing Hill’s own UCL, the repair was performed to reattach the previously placed UCL graft. I don’t have any first-hand knowledge of Hill’s surgery, but my best guess is that the technique was very similar to what was described above for a typical primary repair with internal brace. To my knowledge, this has not been attempted before in a major league pitcher.
     
    There is data showing a relatively good return to play rate with primary repair that is very similar to UCL reconstruction. However, most UCL repair patients are much younger than Hill and the vast majority that have been studied to this point are not major league pitchers. There are a couple of ways you can interpret this data when it comes to Hill. One perspective is that he had a repair of a ‘ligament’ (his UCL graft) that was only 8 years old (since his TJ was done in 2011), and as such it likely doesn’t have as much cumulative damage as his UCL might otherwise have if he had not had any prior surgery. An opposing perspective would be that this is his second UCL operation, and even though his most recent surgery was not a reconstruction, the data that would be most applicable to him would be data regarding athletes who have undergone revision UCL reconstruction (meaning they have had a repeat TJ procedure after the UCL failed a second time). This data is less optimistic. Most studies would put the rate of return to play after normal UCL reconstruction around 85% (depending on exactly how you define successful return to play). In most studies, the rate of return to play after revision UCL reconstruction is much lower, around 60-70%. There are two MLB pitchers that I am aware of that have undergone primary repair of the UCL (Seth Maness and Jesse Hahn). Maness has yet to return to MLB and Hahn didn’t fare very well in 6 appearances in 2019.
     
    Finally, my last input on this topic as it pertains to Hill is to imagine the specific position he is/was in. He is likely nearing the end of his career (he turned 40 in March 2020). He had a significant elbow injury that was not getting better without surgery. Presumably his choices were four:
    1) Continue trying to rehab without surgery and see how it goes, understanding that the possibility exists that rehab may not be successful. (Perhaps a PRP injection could be tried)
    2) Retire.
    3) Undergo revision UCL reconstruction with its associated 12-18 month recovery timeline, likely putting him out for all of 2020 with a possible return in 2021 at age 41.
    4) Undergo this relatively new primary repair procedure with the possibility of allowing him to return to play for part of the 2020 season, but with a much less known track record. In fact, a basically completely unknown track record for his specific situation.
     
    If that doesn’t seem like a list filled with great options, it’s because it isn’t. If I’m being honest, I think Hill probably made the best choice (presuming that he still has a desire to play), even with the unknowns regarding his recovery. He obviously couldn’t have seen this virus pandemic coming, but that would seem to make the choice even better since he is not missing any games (because none are being played).
     
    For Hill’s and the Twins sake, I hope his recovery goes smoothly and he is able to return and pitch at the high level he is used to. He sure seems like a warrior and is certainly the kind of person that is easy to root for. But based on what we know about his situation, there is an element of uncertainty. If I were Hill’s surgeon, I likely would have told him that he had around a 50-60% chance to return and pitch meaningful innings after this type of surgery. Let’s hope the coin falls his way, and also that we can figure out how to best handle this virus and get everyone back to their normal way of life as soon and safely as possible.
     
    Thanks for reading. Be safe everyone. Feel free to leave any questions in the comment section.
  3. Heezy1323
    UCL Reconstruction Surgery
    Heezy1323
     
     
    I recently posted a blog about Chris Sale and the news that he was set to undergo UCL reconstruction. That post covered some questions surrounding the diagnosis and decision-making that occurs when players/teams are faced with this dilemma. That post got a little lengthy, and I chose not to delve into the surgery itself, as I felt that may be better presented as a separate entry. My intention with this post is to discuss some of the different techniques that are used to perform UCL reconstruction. This does get fairly technical, and I apologize in advance if it is more than people would like to know.
     
    First, we should revisit the anatomy. The ulnar collateral ligament (UCL) is a small but strong ligament on the medial (or inner) part of the elbow. It is around the size of a small paper clip. Ligaments (by definition) connect one bone to an adjacent bone. The UCL spans from the medial epicondyle of the humerus (the bump you can likely feel on the inside of your elbow) to the sublime tubercle of the ulna (one of the two forearm bones). (As an aside, sublime tubercle is one of my favorite terms in all of anatomy).
     




     
    As with nearly any reconstructive surgery in orthopedics, our aim is to recreate the native/normal anatomy as closely as possible. In order to do this, most techniques utilize small tunnels that are drilled into the bone at the ligament attachment sites. The tissue that is used to reconstruct the ligament is then woven through these tunnels and tightened to create a secure new ‘ligament’ that heals and strengthens over time.
     
    The primary differences between different techniques are the ‘approach’ (or how tissues are moved aside to see the damaged areas), the specifics of how the tunnels are made and used, the type of tissue (or graft) that is used to make the new ligament, and the way that the graft is secured in place. There are a number of variations that exist, but I’ll cover a few of the most commonly used methods.
     
    First, some history may be in order. The first UCL reconstruction was, famously, performed on Tommy John. Tommy John was an outstanding pitcher for the LA Dodgers in the early 1970’s, and had compiled a 13-3 record in 1974 when he had a sudden injury to his elbow and was unable to throw. Imaging was performed, and the diagnosis of a UCL tear was made by pioneering orthopedic surgeon, Dr. Frank Jobe (of the famous Kerlan Jobe clinic in LA). Dr. Jobe had an idea to perform a reconstruction of the UCL, and practiced on several cadavers until he felt he had worked out a promising technique. He told Tommy that he thought he had a 1 in 100 chance of a successful return to MLB pitching. John decided to go ahead. The surgery was ultimately successful, and John returned to pitching in 1976. Though Tommy made it back, he did have a temporary palsy of his ulnar nerve after surgery, which is the ‘funny bone’ nerve that is near the UCL. This caused him significant weakness in his hand at first, but fortunately the strength returned over time and Tommy was able to return to pitching. Interestingly, he won more MLB games after surgery than he did before surgery, and pitched until 1989. There is a story that Jose Canseco hit a homer off John late in his career. Apparently Canseco’s father was Tommy’s dentist, and Tommy said something to the effect of “When your dentist’s kid starts hitting home runs off you, it’s time to retire.”
     
    The technique used for this first surgery was termed the Jobe Technique (for obvious reasons). It involved removing the attachment of the muscles to the inner part of the elbow and pulling the muscles toward the wrist to get a good look at the UCL itself. Tunnels were drilled in the bone at the normal attachment sites of the ligament, and a small tendon from the forearm (called the palmaris) was used to weave through the tunnels making a ‘figure-8’ in order to make a new ligament. (The palmaris is a non-necessary tendon that is located in the forearm of about 2/3 of the population. For those patients who don’t have a palmaris, we usually use a hamstring tendon called the gracilis for this procedure.) The old ligament was left in place and sewed into the graft. The nerve was also moved from its normal location (behind the bump) to in front of the bump to take some of the tension off. This is called a ‘transposition’ of the ulnar nerve.
     


     
    This technique was used for a while, but it did have some drawbacks, such as a high percentage of patients having ulnar nerve problems after surgery and some weakness resulting from detaching and reattaching the muscles of the forearm. Because of this, other surgeons sought new ways to perform this surgery.
     
    One commonly used technique was termed the ASMI-modification of the Jobe Technique. ASMI stand for American Sports Medicine Institute (in Birmingham, AL) and this modification was initially described by Dr. James Andrews and colleagues. This involved similar bone tunnels, but the main difference was in the way that the muscles were treated. Rather than detaching the muscle and reattaching at the end of the surgery, in the ASMI technique the muscle was lifted up (and not detached) and the work was done underneath the muscle. The ulnar nerve is transposed when this technique is used (like the Jobe technique). The passing and fixation of the graft is essentially identical to the Jobe Technique as well.
     


     
    Another commonly used technique is called the ‘docking method’. There are a couple of main differences between the docking method and ASMI method. First, the docking method utilizes a ‘muscle-splitting’ approach rather than a ‘muscle-lifting’ approach like the AMSI technique (see figure). This means that the muscle is divided between its fibers and a ‘window’ is created in the muscle in order to see the torn UCL and make the tunnels. There is also a difference in the way the tunnels are made. In the ASMI technique, the tunnels are the same size all the way through, and the graft tissue is passed all the way through the tunnels. In the docking technique, the tunnel on the ulna side is the same. But on the humeral side, the tunnels are sort-of half tunnels with smaller tunnels continuing on through the back side of the bone. This is because the graft is fixed in a different way- there are strong stitches that are attached to the ends of the graft that pull each end into the large tunnels. The stitches then pass through the small portion of the tunnels and are tied behind the bone, which secures the graft in place.
     


     
    This technique does not require transposition of the ulnar nerve, which is an advantage because less handling of the nerve generally means less risk of trouble with the nerve after surgery.
     
    There are a handful of other techniques that are slight variations on these themes, primarily using different devices such as anchors, interference screws or metal buttons to achieve graft fixation. There have been a number of cadaver biomechanical studies done that have compared methods, and they have been found to be largely equivalent. There seems to be a smaller incidence of ulnar nerve symptoms after surgery when the nerve is not handled/transposed (which makes some sense). The return to play rates are very similar regardless of which technique is used, with perhaps a slight favor to docking technique depending on the study.
     
    I trained with Dr. Andrews, and performed nearly 100 UCL reconstruction cases during my fellowship using the ASMI technique. In my own practice, I tend to use the docking technique most commonly. I do this because I would prefer not to transpose the nerve if I don’t have to in order to decrease the likelihood of nerve problems after surgery. We also saw some problems with fracture of the bone near the humeral tunnels when using the ASMI technique, and using the docking technique allows us to make smaller tunnels. This makes fracture in this area less likely. That said, Dr. Andrews has had (and continues to have) tremendous success using this technique. As we have learned more about this type of surgery, it has become clear that it is important that the bone tunnels be made very accurately, as improperly placed tunnels seem to be a risk factor for inability to return to full participation. There has also been some investigation as to whether addition of PRP or other biologics to the reconstruction area at the time of surgery makes a difference in healing speed or strength. At this time, I am not aware that any research has shown a difference.
     
    If anyone has managed to make it this far without falling asleep, I hope you found this discussion interesting. Feel free to leave a comment below if you have additional questions. Thanks for reading. Safe wishes to you and your families.
  4. Heezy1323

    Chris Sale UCL Q&A

    By Heezy1323,

    Chris Sale Tommy John Q&A
    Heezy 1323
     
    It has been reported that Chris Sale of the Boston Red Sox will undergo UCL reconstruction surgery, also known as Tommy John surgery. Sale has not pitched in a live game since August 13, 2019. He then went on the Injured List on August 17 and did not return for the remainder of the 2019 campaign. He was reportedly seen at that time by several of the best-known US surgeons who care for pitchers and a decision was made to hold off on surgery, and instead try a platelet rich plasma (PRP) injection. He finished the 2019 season with a 6-11 record and ERA north of 4.00, significantly below the standard he had established throughout his excellent career. This is on top of the fact that Sale has yet to even begin his 5-year, $145 million contract extension. Sale will now miss whatever portion of the MLB season is played this year, as well as potentially some part of the 2021 season.
     
    A number of questions can often surround a decision such as this, so let’s cover a few things that readers may find helpful.
     
    (Disclaimer: As per the usual, I am not an MLB team physician. I have not examined Sale or seen his imaging studies. I am not speaking on behalf of the Red Sox or any other team. This article is for educational purposes only for those who might want to know more about this injury/surgery or about how these types of decisions get made.)
     
    Question 1: What is this injury? How does it occur?
     
    The ulnar collateral ligament (or UCL) is a strong band of tissue that connects the inner (medial) part of the elbow joint. (Figure 1)
     
     




     
     
    Though it is relatively small (about the size of a small paper clip), it is strong. The native UCL is able to withstand around 35 Nm (or about 25 foot pounds) of force. However, by available calculations the force placed on the elbow when throwing a 90mph fastball exceeds this, at around 64 Nm. How, then, does the UCL not tear with each pitch? Fortunately, there are other additional structures around the elbow that are able to ‘share’ this load and allow the UCL to continue to function normally (in most cases). The flexor/pronator muscles in the forearm are the most significant contributor. The geometry of the bones of the elbow also help.
    In many cases, the UCL is not injured all at once (acutely), but rather by a gradual accumulation of smaller injuries which lead to deterioration and eventual failure of this ligament. When the ligament is injured, it obviously does not function at 100% of its normal capacity- in which case the other structures around the elbow are required to ‘pick up the slack’ in order to continue throwing at the same speed. This is why when a pitcher reports a ‘flexor strain’, there is concern that the UCL is not functioning properly – the muscles of the forearm are being forced to work overtime to compensate for a damaged UCL.
    There are also cases where the ligament does fail suddenly. These are often accompanied by a ‘pop’ and immediate significant pain.
     
    Question 2: What do players report as the problem when their UCL is injured?
     
    Most commonly, players report pain with throwing at the inner part of the elbow as the most pronounced symptom. However, other symptoms can also be present including loss of throwing control/accuracy, inability to fully move the elbow, swelling, numbness or tingling of the hand and more. Symptoms can be significant almost immediately, or they can begin very subtly and slowly increase over time. Once they have reached higher levels of baseball, most players are aware of this type of injury (thanks to efforts toward education for coaches, athletic trainers and others) and are able to recognize symptoms and report them to the appropriate personnel.
     
    Question 3: Once the player is concerned about an injury to the UCL, what happens next?
     
    Most commonly the player will be examined by an athletic trainer or team physician to assess the injury and direct further treatment. Often, xrays will be performed of the elbow to assess the bones of the elbow joint for any abnormalities. There can sometimes be bone spurs, small fractures, bone fragments or other findings on these xrays. However, much of the time the xrays are normal and an MRI may be performed to further assess the situation. An MRI allows us to see the soft tissues around the elbow in addition to the bones. Specifically, we are able to look more closely at the actual UCL itself, the surrounding muscles as well as get a closer look at the nearby bone. (Figure 2)
     


     
    The MRI helps the treatment team get a sense of the integrity of the ligament, which allows for the next step in the process: deciding how to treat the injury.
     
    Question 4: How are UCL injuries treated?
     
    This is where the challenges often really begin. Much of the time, the UCL will appear abnormal on MRI. There are a handful of grading systems that are used to classify these injuries (one of which, incidentally, I helped create), though there isn’t one that is universally used or agreed upon. Generally speaking, they try to separate injuries into those that are partial tears or complete tears and also try to identify the specific location of the damage. The damage can occur at the upper end of the ligament (called the humeral end), the middle (called midsubstance) or at the lower end of the ligament (called the ulnar end). In those cases where there is a complete tear of the ligament (meaning that the ligament is no longer in continuity and attached at both ends), there is near universal agreement that surgery is typically necessary to allow that athlete to return to competitive throwing activities. The problem, however, is that most MRI’s show a partial injury to the UCL. These injuries can be extremely difficult to predict how they are going to respond to a chosen treatment. In addition, athlete A can have an MRI that looks much more abnormal than athlete B, yet the symptoms of athlete B are substantially worse. This is the basic cause of the uncertainty as it pertains to treatment for this injury.
     
    There has been tremendous research performed attempting to quickly identify ways to reliably separate those throwers that are going to need surgery from those that will not. Indeed, with pitchers such as Sale, there can be tens or even a hundred million dollars plus at stake. However, to date there is not a perfected method that can be used for every athlete to make this surgery vs. no surgery decision.
     
    Question 5: What non-surgical options are available?
     
    There are primarily two non-surgery options available to these athletes, and I’ll attempt to briefly cover them here.
     
    A) Physical therapy- the commonly used ‘rest and rehab’ method. This is probably the most important component of any treatment plan, and a good therapist who has specialized training in the care of overhead athletes is critical. Often, the athlete is prescribed rest from throwing in order to allow the UCL an opportunity to ‘settle down’ any inflammation and perhaps perform some healing of the injured tissue. In addition, as we discussed above, the muscles of the forearm contribute to stability of the elbow joint. Strengthening these muscles (along with a number of other muscles throughout the body) contributes to ‘protecting’ the UCL from further injury. As the recovery progresses, a return to throwing program is initiated, usually starting with a small number of throws from a short distance and gradually progressing to longer throws with greater effort and eventually throwing from the mound (for pitchers). This hopefully results in a more well-balanced and mechanically sound athlete who is more evenly distributing the forces of throwing across the various anatomic structures involved.
    B ) Platelet rich plasm (PRP)- This is a product that is obtained from the athlete’s own blood which is drawn and then spun in a centrifuge to separate the blood into its components. The portion of the blood which contains the platelets is then taken and injected at the site of injury to the UCL. This injection includes a number of chemical signals (called cytokines) that regulate healing and inflammation (along with many other things). The injections are thought to help with healing of these partial UCL injuries. The available data on this is mixed, with some studies showing improved results with PRP and others showing no difference. In the linked study, the rate of ‘successful’ non-surgical treatment was 54% (including both PRP and non-PRP athletes).
     
    Question 6: How is the decision to proceed with surgery made?
     
    This is probably the most challenging part of the evaluation process of UCL injuries. There are a tremendous number of factors which play a role in this decision. These include the specific characteristics of the athlete (such as age, position, role, contract status, stage of career, desire to continue playing and several others); exam and imaging findings (understanding that these are frequently ambiguous); as well as response to previous non-surgery treatment (to name a few). Often more than one expert opinion is sought, particularly when it is a big name/big contract player. Usually, surgeons will speak with a number of people when considering options including the athlete and family, team doctors and staff, team officials, and other experts (who may or may not have seen the patient themselves). In my experience in these situations, the vast majority of the time there is a consensus amongst those involved how best to proceed. Occasionally there will be differing opinions, in which case the athlete often has to make a choice on how to proceed.
     
    Question 7: Why didn’t Sale just go ahead with surgery last fall?
     
    I suspect that this is a question that many Red Sox fans are wondering about right now. As discussed above, these decisions are typically difficult and have many contributing factors. While it may seem as though ‘rest and rehab’ never works and everyone should just go ahead and have Tommy John surgery at the first sign of trouble, that is not really borne out in the data. There is some variance depending on the definition of ‘successful return to play’ used in any particular study, but for the most part the rate of success of Tommy John surgery in pitchers is around 80-85%. That means about 1 in 5 never make it back to pitch. This may not seem like bad odds, but I submit that your opinion might change if it was your elbow (and livelihood/contract) at risk. As they say, hindsight is always 20/20.
    In the case of Sale, I suspect that the season being shortened by the unusual circumstances of coronavirus this year likely also played a role. Once it became clear that a full season would not be played, the decision may have been easier.
    I think I’ll stop there for now (if anyone has continued to read this far…). If people are interested in technical aspects of how the surgery is performed, please let me know in the comments an I’d be happy to do another post about it. I have spare time currently, as you might imagine.
     
    Stay safe everyone, and please listen to the medical professionals who are trying to help us combat this virus. It is a serious threat to our way of life, and we need to treat it as such in order to minimize the damage. Thanks for reading.
  5. Heezy1323
    Biceps Tendinitis in Pitchers Q&A
    Heezy1323
     
     
    A request was made by a poster for me to write a blog covering biceps tendinitis. This is actually a fairly complicated topic with quite a bit of controversy, but I’ll do my best to share some basic info that hopefully TD peeps will find interesting. There are some technical parts, so apologies for that, but I do think a basic understanding of the anatomy is helpful.
     
    Question 1: What is the biceps, exactly?
     
    The biceps is a muscle that we are likely all familiar with, lying in the front of the upper arm and used to perform curls and similar exercises. The word ‘biceps’ has a Latin origin meaning ‘two heads’. This describes the upper (or proximal) end of the biceps where there are two tendon attachments.
     
    The first is the long head of the biceps which attaches to the labrum at the top of the socket in the shoulder. It then curves over the top of the ball (humeral head) where it exits the shoulder joint and begins its course down the front of the upper arm bone (humerus). At the front of the shoulder joint, it travels through what is called the ‘bicipital groove’ which is an area of the bone of the humerus between two bumps (called tuberosities). This groove is often the site of issues in pitchers (more on this below).
     


     
    The second is the short head of the biceps, which originates from a bony projection off the shoulder blade in the front of your shoulder called the coracoid. It travels straight from here to meet up with the long head of the biceps in the upper 1/3 of the arm. There, the tendons join and form the biceps muscle.
     
     
    Below this (distally), the muscle turns back into a tendon just above the elbow and a single tendon then travels down to one of the bones of your forearm (called the radius) where it attaches at a bony prominence called the radial tuberosity.


     
    Question 2: How is this tendon involved in throwing?
     
    This is a great question, and a subject of much debate amongst experts. The short head of the biceps likely has a relatively insignificant role in throwing. The long head (which is the one that attaches inside the shoulder joint) is much more involved in the throwing motion. When throwing at MLB speeds, the shoulder rotates at 7000 degrees per second, which is the fastest known human motion. One can imagine the stress this places on the structures that surround the shoulder.
     
    Without delving into the weeds too much, it seems as though the biceps has a role in position sense of the shoulder during throwing, likely a role in stability of the shoulder joint and also helps slow down the arm after ball release.
     
    At the other end of the tendon (distal), the elbow changes rapidly from a bent position to a straight position as the ball is released during a throw. In order to keep the bones of the elbow from jamming into each other at a high speed, the biceps muscle fires to slow down this elbow straightening (what we call an eccentric contraction). This allows some of the force of throwing to be dissipated by the muscle (kind of like a shock absorber).
    If it seems like that is a lot of jobs for a small tendon/muscle- it’s because it is…
     
    Question 3: What happens when someone gets biceps tendinitis?
     
    Tendinitis is a fairly broad term and can mean a number of different things depending on the context. With respect to the biceps, a thrower can develop issues at either the upper (proximal) or lower (distal) end of the biceps. The suffix -itis means inflammation, so the general thought is that there is inflammation that develops in or around the tendon.
     
    The reasons ‘why’ are heavily debated, but generally there is probably some combination of overuse/fatigue and altered mechanics or muscle imbalances that contribute. It takes a tremendous amount of efficiency of motion and coordination of muscle movements to throw a baseball in excess of 90mph, and any small abnormality can easily be compounded by the sheer number of repetitions and intensity of a typical pitcher. Over time, this can add up to cause damage to the tendon and result in inflammation and pain.
     
    Arthroscopic image of normal biceps tendon (left) and inflamed biceps (right)


     
    Question 4: How does the player/medical staff separate this injury from other issues that can seem very similar?
     
    This can be VERY difficult. Often the player will have pain at the front of the shoulder (in cases of proximal biceps tendinitis) or just above the elbow (in distal cases). A thorough history and exam is performed in order to hone in on the likely problem area.
     
    An MRI is ordered in some cases. One of the challenges with this type of issue is that in many cases, an MRI of a pitcher already has some abnormalities on it which are likely adaptive and have been present for a long time (and are not the actual cause of pain). In addition, in many cases the inflammation around the bicep isn’t something that can be clearly seen on MRI. So interpreting imaging studies can be a significant challenge.
     
    Usually the exam is (in my experience) the most helpful thing in recognizing biceps tendinitis when it is present. The athlete is usually tender right in the area of the tendon, which is a helpful finding.
     
    Question 5: Once a pitcher is diagnosed with biceps tendinitis, how are they treated?
     
    Again, there are a lot of variables here. But presuming it is significant enough to affect the performance of the pitcher, they would typically be shut down for a period of time to prevent worsening of the condition. Anti-inflammatory medication may be used. In some cases, injections of cortisone are used to try and decrease the inflammation.
     
    With the recent increases in the use of technology, video may be consulted to see if there have been subtle mechanical changes which may have contributed to the issue. Muscle strength can also be tested in various areas around the shoulder to see if weakness is contributing.
     
    In essentially all cases, a rehab program will begin that is likely to include strength and flexibility components. When the pain has subsided, a return to throwing program is begun and once complete, the athlete can return to play.
    A group out of Mayo Clinic (led by Dr. Chris Camp) recently did a study of pro baseball players (minor and major league) and causes of injury over a several year period. Tendinitis of the proximal biceps was actually the #4 cause of injury with an average return to play time of about 22 days.
     
    Question 6: Is surgery ever needed?
     
    It is quite uncommon for surgery to be needed for this issue. In fact, in Dr. Camp’s study above surgery was only required in 3% of cases of proximal biceps tendinitis. So clearly most of these cases improve with non-surgical treatment. In addition, surgery for this particular issue has a fairly poor track record and is avoided if at all possible.
     
    Question 7: What can be done to prevent biceps tendinitis?
     
    Great question, reader. If I knew the answer, we could likely both be millionaires given how common this injury is and the dollar figures involved when a high-priced starter or reliever is on the shelf for this reason.
     
    Generally, I believe monitoring the workload of pitchers through the season, doing what you can to ensure they maintain a good off-season program and having a good line of communication with the players are all important. As video analysis and other analytic measures become more popular, my hope is that they can be incorporated into injury prevention as well.
     
    Thanks for humoring me on this complex topic. Please feel free to add a request for a future subject in the comments. GO TWINS!!
  6. Heezy1323
    Byron Buxton Shoulder Injury Q&A
    heezy1323
     
     
    Byron Buxton, as we all know, is an outstanding center fielder for our Twins. Unfortunately, he has dealt with a variety of injuries that have cost him significant time over the past few seasons. This weekend he sustained an injury to his left shoulder that was termed a ‘subluxation’ and is headed back to the IL. By the sound of things, he is likely to be away from the big club for at least a few weeks. This is a tough blow for the Twins as the Indians make a push to catch up to a team that has led the division essentially all season.
     
    Medical terminology can be confusing, so I thought a post about shoulder subluxations might be of interest to TD readers. As usual- my disclaimer is that I am not a Twins team physician. I have not examined Byron nor seen any imaging of his injury. I am not speaking on behalf of the Twins. I am only hoping to familiarize TD readers with some of the concerns that may be ahead regarding injuries similar to Buxton’s.
    Question 1: How does the shoulder normally work?
    The shoulder is considered a ball-and-socket joint. The round ball (humeral head) sits in the socket (glenoid) similar to how a golf ball sits on a golf tee. Around the perimeter of the golf tee is a strong cartilage tissue called a labrum. The labrum surrounds the socket similar to the red gasket on a mason jar lid. Its function is to help act as a ‘bumper’ to hold the golf ball on the golf tee. It is also an attachment point for ligaments around the shoulder that also contribute to shoulder stability. The ligaments make up the ‘capsule’ of the shoulder joint. I often tell patients that the capsule is like a water balloon that surrounds the joint. The ligaments that make up the capsule form the connection between the ball and the socket.
     
    Question 2: What is a shoulder subluxation?
     
    The term ‘subluxation’ is typically used in situations where a joint partially (or nearly) dislocates. This is not specific to the shoulder and can happen in a number of other areas of the body as well (such as the kneecap, for example). This is distinct from a true ‘dislocation’ where the ball comes completely out of the socket and then goes back in.
     
    If someone dislocates their shoulder and it stays dislocated, it is typically clear what has happened. Xrays will show the ball dislocated from the socket and the shoulder will be manipulated to ‘reduce’ the ball back to its normal position. However, in some cases cases the ball can completely dislocate and go back in on its own very quickly. In these cases, an xray would often look normal. In most cases when there is concern about an injury of this type, an MRI is ordered. This of course shows additional details of the bone and soft tissue that cannot be seen on an xray alone. Usually an MRI will allow for a pretty solid conclusion as to whether the injury that occurred was a ‘subluxation’ (less severe) or a true ‘dislocation’ (more severe).
     
    There is, of course, a spectrum of damage that can occur with any injury and this is no exception. It’s possible that there was some minimal stretch to the ligaments around the shoulder and no other significant damage (best case). It’s also possible that there was more significant damage to the ligaments and potentially even a tear of the labrum (more worrisome). The MRI would typically give a good approximation of these issues. In most cases, the damage that occurs with a subluxation is less significant than that which occurs with a dislocation.
    Question 3: Does it make a difference that the injury is to his left shoulder rather than his right?
     
    In my opinion, absolutely. Because it is his non-throwing shoulder, the stresses placed on it are less. Even small issues with the ligaments can be problematic in the throwing shoulder- particularly someone who can approach 100mph on throws from the outfield.
     
    That said, the left shoulder is Byron’s front shoulder when hitting. In most hitters it is the front shoulder that is more stressed. It is possible that Buxton’s recovery is more affected at the plate than in the field (though that’s impossible to predict with certainty, of course).
     
    Question 4: Does this injury make it more likely that Byron will dislocate his shoulder in the future?
     
    Possibly. As discussed above, there is a spectrum of damage that can occur with this injury. If the damage is near the minimal end, it probably doesn’t have a significant effect on his likelihood of injuring this shoulder in the future. If there is more significant structural damage, it may place him at higher risk.
     
    Question 5: What is the purpose of the rehab?
     
    In addition to the capsule and labrum discussed above in question 1, the muscles around the shoulder also contribute to stability. I often tell patients to imagine that there is canopy over the top of the golf ball pulling it down onto the golf tee and helping to hold it in place. This is similar to the way your rotator cuff functions. I suspect rehab for Buxton will include strengthening exercises for a number of muscles around the shoulder that contribute to stability.
     
    Also, these muscles can be strained during the injury, so they can sometimes need additional time to recover along with the ligaments.
     
    Question 6: Will Buxton need surgery?
     
    This is essentially impossible to answer right now, likely even for the physicians and training staff involved in Byron’s care. As I sometimes tell my patients, “The crystal ball is a little murky.” Without knowing the extent of any structural issues in Byron’s shoulder, I would say that it is somewhat unlikely this will require surgery. I would expect that even if surgery is required, it would only occur after an attempt at non-surgical treatment has been unsuccessful.
     
    Question 7: How long will it be before he is able to return to play?
     
    This is also a difficult question to answer. The fact that the early word is that he will be out a few weeks is consistent with what I would expect from an injury like this. The rehab often takes time to regain full motion and strength. I would hope he can be back patrolling center field before the end of August, but it’s certainly possible this lingers into September. It seems unlikely that this would be a season-ending injury, but only time will tell.
     
     
    Clearly this Twins team is better when Byron is on the field rather than on the IL. Let’s hope he heals quickly and can help the Twins down the stretch. GO TWINS!
  7. Heezy1323
    Brusdar Graterol Shoulder Impingement Q&A
    Heezy1323
     
     
    Heralded Twins prospect Brusdar Graterol was recently shut down and placed on the IL for ‘shoulder impingement’. This is concerning given how promising a start to the 2019 season Graterol has had and what it could mean for his future.
     
    So what is ‘shoulder impingement’? And when might it need surgery? Let’s see what we can figure out:
     
    [Disclaimer: I am not a team physician for the Twins. I have not treated or examined any Twins players. The information I am using is only that which is publicly available. My goal with these posts is to provide some education to TD readers around general injuries that are peculiar to baseball players.]
     
     
    Question 1: What is shoulder impingement?
    Shoulder impingement is a sort of catch-all term that can be used to mean a number of different things depending on the specifics of the situation. It Is a term that is often used in application to patients who have pain in their shoulders, often without any specific structural damage or a particular injury. Most frequently, people have pain in their shoulder area that gets worse when working above chest level. It is often treated with physical therapy, activity modification, oral medication and occasional cortisone injections. It is uncommon for these patients to require surgery, but it is sometimes needed after the preceding treatments have failed to provide adequate relief. Some also refer to this condition as shoulder bursitis. It involves irritation of the rotator cuff and the bursa, which lies between the rotator cuff tendons and a part of the bone of the shoulder blade (called the acromion). You may have friends or family members who have been told they have ‘impingement’- this is a fairly commonly used diagnosis. More specifically, this condition is referred to as ‘external impingement’.
     


     
    Shoulder impingement in pitchers, however, often means something entirely different than what is described above. Whereas external impingement occurs between the rotator cuff and the acromion (outside of the ball and socket joint of the shoulder), pitchers more commonly have problems with what is called ‘internal impingement’. This occurs specifically in overhead athletes because of the tremendous motion that is necessary to hurl a baseball 90+ mph accurately. During the course of throwing, the arm is cocked back, placing it in an awkward position. In this position, part of the rotator cuff can get pinched between the bone of the ball and the bone of the socket (also often including pinching of the labrum). This may not seem like a big deal, but over time this repetitive motion can begin to take its toll. Experts agree that some changes/damage to the structures of the shoulder are likely normal and adaptive in pitchers rather than problematic. In some cases, however, these structural changes progress down the spectrum and become an issue- causing pain, lack of velocity and/or control and fatigue of the shoulder.
     


     
    There is not perfect agreement amongst experts about why exactly these athletes begin to have pain in some cases. Regardless, it is likely a very complex combination of factors ranging from subtle changes in mechanics to core strength to gradual loosening of shoulder ligaments over time (and many others). Each individual case is likely different, and treatment needs to be tailored to the specifics of the athlete.
     
     
    Question 2: How/when did this injury occur?
    Typically, this is not an injury that results from a single trauma (though theoretically it can happen that way). It is much more typical for this to be the result of an accumulation of ‘microtraumas’ over a long period of time.
     
    Question 3: Does this injury always need surgery?
    No. As mentioned above, painful shoulder impingement in throwers is likely related to a complex set of factors. Because of this, treating any ONE thing with a surgery is somewhat unlikely to be effective. As a result, treatment is almost always begun by trying to calm down inflamed tissues. This typically involves rest from throwing. It may also involve oral medications and in some instances, cortisone injections. There is some discussion around PRP and so-called ‘stem cell’ injections (what orthopedists refer to as Bone Marrow Aspirate Concentrate or BMAC) for these types of problems, though this is not yet something I would consider standard of care.
    During this time, the athlete is also likely to undergo physical therapy to work on improving some of the other factors mentioned above- core strength, range of motion, rotator cuff strength, etc.
    As the pain and inflammation improve, the athlete is likely re-examined by trainers and physicians. This can take anywhere from a week or two to several weeks depending on the case. When things have improved sufficiently, the athlete is likely to begin an interval throwing program, which involves progressively more aggressive throwing sessions. Once they have completed this, they would likely return to the mound and begin throwing from there. Once appropriate progress has been made (and of course presuming no setbacks are encountered), they are likely cleared to return to play.
    The success of non-surgical treatment for these types of problems is all over the map in the literature. There are ranges from percents in the teens to 70%+. Again, it likely depends on a large number of factors which makes prognosticating nearly impossible.
     
     
    Question 4: How do we tell which cases of impingement need surgery and which do not?
    This can be among the most difficult decisions to make when dealing with pitchers. One of the problematic elements is that surgery to treat this problem is comparatively not very successful. As noted above, in general there are likely a number of different structural abnormalities in the shoulder that are in play with this injury. Some of them are adaptive and are considered ‘normally abnormal’ for pitchers. Others are problematic. Separating these two is something about which even experts readily disagree.
    It is difficult (and perhaps foolish in this setting) to quote surgery success rates, but in general they are not the best. There is a reason behind the old saying that for pitchers “If it’s the elbow, call the surgeon. If it’s the shoulder, call the preacher.”
     
     
    Question 5: What is done during surgery?
    This is widely variable depending on the specific structures that are injured, and (quite honestly) the particular views of the operating surgeon. I was recently watching a lecture on just this subject that featured a panel of a number of the preeminent North American surgeons that treat these problems. The differences of opinion and differences in strategy between surgeons were substantial. Yet another reason to make significant efforts to make non-surgical treatment successful.
     
     
    Question 6: How concerning is this for Graterol?
    This is hard to know from the information available. As stated earlier, the term ‘impingement’ can mean a wide variety of things- some more concerning than others. One of the positives in this case would seem to be that Graterol was pitching very effectively quite recently. Thus, this doesn’t seem to be something that has been festering for months. Hopefully that means they’ve ‘caught it early’ and can get things back on track sooner than later. I would imagine he will be out for a few weeks at least, but I would be surprised if he required any surgery in the near future.
    Overall, many pitchers have occasional blips on the radar with things like this that are improved with rest and rehab and don’t recur in the future. Predicting the future is difficult for anything- and this type of issue especially- but hopefully Graterol can get back on the mound throwing gas soon.
     
     
    Go Twins!
  8. Heezy1323
    Logan Morrison Hip Impingement Q&A
    Heezy1323
     
    Twins DH/1B Logan Morrison was recently shut down for the remainder of the season and, by reports, is expected to undergo surgery for a hip condition that has been bothering him for much of the year. The problem is being reported as ‘hip impingement’, which is a fairly common diagnosis. Some may recall that the NBA’s Isaiah Thomas dealt with this problem over the past couple seasons and underwent surgery more recently.
    So what is ‘hip impingement’? And when does it need surgery? And what happens during surgery? Let’s dive in and see what we can find out:
     
     


     
    Question 1: What is hip impingement?
    Hip impingement is another term for what orthopedists call ‘femoroacetabular impingement’ or FAI. This term basically means pinching of the hip labrum tissue between the bone of the ball and the bone of the socket of the hip.
     
    The hip is a ball and socket joint. Around the rim of the socket is a tissue called ‘labrum’ which acts as a cushion, and also seals the ball into the socket. In an ideal world, the ball is perfectly round and the socket is perfectly hemispherical. In this case, when people move the hip around, there is no pinching. However, in some people, rather than being round the ball is more shaped like a grape or an egg. In these cases the extra bone can cause a pinching of the labrum when the hip is flexed (for example, when seated). Over time, this repetitive minor injury can cause damage to the labrum. There can also be extra bone on the socket side, which can have a similar effect. These two situations are called CAM impingement (extra bone on the ball) and PINCER impingement (extra bone on the socket). In many cases, both CAM and PINCER impingement coexist.
     


     
     
    Question 2: I don’t remember LoMo getting hurt. When did the labrum get torn?
     
    Typically, this is not an injury that results from a single incident (though it can happen that way). It is much more common for this to be the result of an accumulation of ‘microtraumas’ over a long period of time.
    In addition, the CAM and PINCER deformities are quite common in people who don’t have any pain in their hips. In some studies, >50% of asymptomatic patients have some signs of CAM or PINCER deformity on hip xrays. Simply having the ‘extra bone’ doesn’t automatically mean it is going to be a problem. Our understanding of why people develop these deformities is improving, but we don’t know the cause at this time. It appears to be more common in people participating in athletics (particularly hockey), so we think it has something to do with low-level trauma to the area during growth years.
     
     
    Question 3: Does a labrum tear always need surgery?
     


     
    No. A labrum tear is also a very common finding in patients with no hip pain. In one study of patients between 18-40 years old who had no hip pain, MRI’s of the hip showed a labrum tear about 40% of the time. So clearly not every labrum tear causes pain or requires surgery. There are also a number of conditions that can cause similar pain to hip impingement (ranging from hernias to pinched nerves in the spine to ‘sports hernias’ and many others). Therefore, time is often spent trying to decipher what the actual cause of the pain is in these patients, as it isn’t always as straightforward as we would like it to be.
     
     
    Question 4: How do we tell which labrum tears need surgery and which do not?
     
    This can be difficult, but typically rest, anti inflammatory medication, physical therapy and/or injections of cortisone are tried prior to surgery. Many patients can find success with these treatments. However, some do not, and surgery may be warranted.
     
    Question 5: What is done during surgery?
     


     
    There has been a significant evolution of techniques in hip surgery over the past decade as surgery for this condition has become more common. It can be done either open (through an incision) or arthroscopically (through the scope). Arthroscopic treatment is much more common, particularly in the United States.
    The hip is stretched apart by use of a special table that pulls the joint open about 1cm. The scope is put in to the joint and tools are used to examine the joint space. We look at the surface cartilage, labrum and other structures in and around the hip. Once we have looked at everything, any ‘extra’ bone on the socket side is carefully removed with a tool called a burr. The labrum tear is often repaired with small anchors back to the rim of the socket (from where it tore away). The ball is then released back into the socket and we use the burr to reshape the ball, removing extra bone in that area as well.
    Surgery often takes 2-4 hours depending on the extent of injury.
     
    Question 6: How long is the recovery?
     
    As with any surgery, the recovery is variable, but most high-level athletes are back to full sports around 6-8 months after the operation. There have been several studies examining the performance of professional athletes in different sports after return from this hip surgery. Most have shown little or no diminished performance after recovery.
     
     
     
    I’m certain even Morrison would say he didn’t have the season he was hoping to have for the Twins, and this hip issue certainly could’ve been part of the reason. Hopefully he can improve after surgery and get back to his 2017 form, whether for the Twins or elsewhere.
  9. Heezy1323
    Royce Lewis: Patellar Tendinopathy
    Heezy1323
     
    The Twins community recently received some concerning news about highly-regarded prospect Royce Lewis. Lewis left the Cedar Rapids Kernels Saturday game with what is being reported as ‘patellar tendinitis’, which has been causing him trouble off-and-on for about a month. But what is ‘patellar tendinitis’ exactly? And what might it mean for Royce going forward? Let’s discuss:
     
    Question 1: Where is the ‘patella tendon’?
    The patella tendon is the tendon that goes from your kneecap (also called the patella) down to the upper part of your shin bone (tibia). It is the attachment of your quadriceps muscle group to your lower leg, and it is what allows people to extend the knee.
     


     
    Question 2: What is ‘patellar tendinitis’?
    Patella tendinitis is a term commonly used to refer to activity-related pain that occurs near the attachment of the patella tendon to the patella. The suffix ‘-itis’ is used to indicate inflammation. While the term is commonly used, in actuality a more appropriate term is ‘patella tendinopathy’, which refers to degenerative changes within the tendon in the absence of inflammation (which is more accurately the case in this diagnosis). This difference is important when considering treatment options.
     


    Question 3: Royce is clearly a high-level athlete. Why did he get this problem?
    Patellar tendinopathy is also commonly called ‘jumper’s knee’ since it occurs most frequently in athletes that do a lot of jumping. In some studies of professional volleyball and basketball players, the incidence of jumper’s knee has been shown to be more than 30%. It is much less common in non-jumping athletes, but still occurs in around 2-3% of soccer players. I was not able to find any information specifically discussing the incidence in baseball players.
    It is unclear exactly why this problem occurs. It is most likely a combination of factors including BMI, flat feet, muscle imbalance in the quad/hamstrings, low flexibility, and intrinsic properties of the patellar tendon. There are likely other factors as well, including overuse.
    The area involved is usually located directly at the bottom end of the patella/top part of the tendon. Symptoms usually come on gradually over time. Initially, the knee typically hurts only with activity. Over time, if the condition worsens, pain may begin to be present even at rest.
     
    Question 4: How is patella tendinopathy diagnosed?
    The diagnosis is usually fairly clear from the history and physical exam of the athlete. Xrays are usually normal, though in some cases calcifications of the tendon may be visible. An MRI is the standard test to identify the extent of the problem and also to rule out other problems inside the knee. The area of the tendon involved in the problem is typically fairly small- around the size of a couple tic-tacs.
     


    Question 5: How is patella tendinopathy treated?
    The most commonly prescribed treatment for patellar tendinopathy is rest from vigorous activity and specific physical therapy exercises (called eccentric exercises). These exercises are designed to strengthen the quad muscles, stretch the hamstrings and ultimately cause favorable adaptation of the knee. The time needed for symptoms to resolve can be highly variable, but often takes at least a few weeks.
    When therapy isn’t effective, other treatments can be tried including various injections and ultrasound. At this time, there is no significant evidence that PRP (platelet rich plasma) injections are helpful for this condition, though I suspect it is being considered. There is, to my knowledge, no significant data on stem cell injections for this problem.
     
    Question 6: Is surgery ever needed for patellar tendinopathy?
    Rarely, yes. In most studies, around 10% of patients will fail to respond to appropriate conservative treatment. In these cases, surgery may be needed. There are two main options: open surgery and arthroscopic surgery. In either case, the procedure is similar- the area of affected tendon is excised and a small (a few millimeters) part of the patella bone is removed to stimulate healing. Therapy is begun soon after surgery. The success rate for return to sports is around 80% for both surgeries, with return after the arthroscopic version being quicker on average. Usually, 4-6 months is needed for full return to sports after surgery.
     
    Question 7: Is Royce at increased risk of rupturing the patella tendon because of this problem?
    No. Having patella tendinopathy does not appear to place anyone at increased risk of having a patella tendon rupture when compared to those without the problem.
     
    Overall, I believe the most likely scenario to be that Lewis’ body is adjusting to playing professional baseball every day and he is having some minor issues as a result. I don’t expect this to be a substantial problem going forward, though the possibility that this requires surgery in the future does exist. Hopefully he will get through rehab quickly and be back on the field soon.
  10. Heezy1323
    Jason Castro Meniscus Surgery Q&A
    Heezy1323
    Twins starting catcher Jason Castro went on the DL May 5th with pain in his right knee. Initially, it was reported that Castro underwent a cortisone injection and was hopeful to return to the lineup soon. Unfortunately, after traveling to Vail, CO to see noted orthopedic surgeon Dr. Robert LaPrade, Castro is now scheduled to undergo surgery May 15th to address a meniscus tear. (Update: Now being reported that he underwent more extensive surgery including a meniscus repair and is now out for the season). This will be the third surgery for Castro’s troublesome right knee, according to the Pioneer Press. He sustained an ACL tear along with a meniscus tear in spring training 2011 and underwent surgery, which caused him to miss the entire season. He also underwent arthroscopic surgery on the same knee in September 2013.
     
    Let’s discuss some knee anatomy and some meniscus ‘fun facts’ (Note: these facts may only be considered fun to me…)
     
    Question 1: What is the meniscus? What is its function?
     


     
     
    The meniscus is a C-shaped cartilage cushion that is positioned between the bones of the knee (the femur and tibia). It has several functions including acting as a shock absorber, a protector of the surface cartilage and a stabilizer of the knee. There are two menisci in each knee- a medial and lateral meniscus. The medial is positioned at the inside of the knee, the lateral to the outside. Both the medial and lateral meniscus increase the surface area of bone contact within the knee when walking/running, thereby spreading out the contact forces over a larger area. This function protects the surface gliding cartilage (called articular cartilage) from being damaged.
     
    Question 2: How is a meniscus torn/damaged?
    A meniscus can be torn in several ways, but most commonly it is damaged when the knee undergoes an abrupt change of direction and the stress is more than the meniscus can withstand. In the case of Castro, it sounds as though he had some damage to his meniscus in 2011 when he also tore his ACL. A meniscus tear accompanies an ACL tear about 50% of the time. Either the medial or lateral meniscus can be torn, and in some cases both sustain injury.
     
    Question 3: How are meniscus tears assessed?
    Most commonly an MRI is ordered to look at the meniscus more closely. The meniscus can’t be seen on xrays. There is a device that is similar to a large needle that has a camera inside it that can be inserted into the knee during an office visit to view the meniscus directly, but I don’t have much experience with this device.
     
    Question 4: What types of tears can occur?
    There are a number of different types of meniscus tears, and there are many tears which don’t fit neatly into a single category as well.
     


     
    Question 5: What are the treatment options for meniscus tears?
    There are a number of different options for treatment of meniscus tears. Not every meniscus tear will require surgery- in fact, many people may have a meniscus tear in their knee and not even be aware of it. Anti-inflammatory medication, injections (including cortisone, gel/lubricant, and PRP injections), and physical therapy are among the non-surgical options. When these are not successful (or surgery is deemed necessary early on), knee arthroscopy is performed.
    During knee arthroscopy, the knee is inflated with fluid and a camera is inserted inside the joint. The structures of the knee can be readily assessed, and tools are used to examine and probe the meniscus, surface cartilage and ligaments. The specifics of the meniscus tear are then evaluated. A decision is then made whether to repair the meniscus or remove the torn portion of meniscus (called a partial meniscectomy). This decision can be complex and is based on a number of factors including the size, location and orientation of the tear, patient-specific factors such as age, weight, health, prior surgery to the knee and others.
     


     
    Ideally, we would repair all meniscus tears, as removing meniscus can lead to the development of arthritis later on. However, some tears are simply unable to be repaired and must be partially removed. Tears closer to the outer edge of the meniscus have better blood supply are more likely to heal, and thus are better suited to repair.
     
    Question 6: What is the recovery time?
    This can vary significantly, but for partial removal, most athletes can return to sports between 6-10 weeks after surgery. For repair, the recovery is longer because of the additional time required for the repaired tissue to heal. Typically, a return to sports for a meniscus repair is around 3-5 months.
     
    Question 7: Are there any special circumstances with Castro’s knee?
    I would say yes. The fact that he has had two prior surgeries on the knee (including an ACL reconstruction) often makes the MRI more challenging to interpret and can complicate decision-making. It is unclear to me if the current meniscus damage is in the same area where he previously had surgery, which can create an already abnormal appearance on MRI. Thus, it is difficult to know whether what appears abnormal on a current MRI is ‘new’ or ‘old’. However, it sounds like he has continued to have intermittent problems over a lengthy amount of time now, and it seems reasonable to go ahead with arthroscopy. One concern is that a tear can enlarge in size over time if left alone (though this is difficult to predict).
    Dr. LaPrade is a world’s authority on knee problems and I’m sure he will do his best to get Castro back to action quickly and safely.
  11. Heezy1323
    News came down yesterday that highly-touted Twins SS prospect Wander Javier will undergo season-ending surgery on his left (non-throwing) shoulder to repair a torn labrum. According to LEN, this was an injury that was suffered initially late last season, but initially the decision was made to attempt to treat Javier with rehabilitation. Unfortunately, he has continued to have pain in the shoulder, and he has taken the dreaded trip to Pensacola, FL to see Dr. James Andrews. It sounds like Dr. Andrews will perform surgery soon, and that Javier is expected to be out six to nine months.
     
    Shoulder injuries are common in baseball players, certainly. But they are much more common in the throwing shoulder, particularly in pitchers. Let’s discuss how this injury may be similar and different.
     
    Question 1: What is a labrum, anyway?
    The shoulder is considered a ball-and-socket joint. The round ball (humeral head) sits in the socket (glenoid) similar to how a golf ball sits on a golf tee. Around the perimeter of the golf tee is a strong cartilage tissue called a labrum. The labrum surrounds the socket similar to the red gasket on a mason jar lid. Its function is to help act as a ‘bumper’ to hold the golf ball on the golf tee. It is also an attachment point for ligaments around the shoulder that also contribute to shoulder stability.
     
     
    Question 2: How does a labrum get injured?
     
    There are several ways that someone could injure the labrum of the shoulder. In baseball players (and pitchers in particular), it is common for a labrum tear to occur at the top of the socket near the attachment of the biceps tendon. This is called a SLAP tear (Superior Labrum Anterior to Posterior) and is typically the cumulative result of repetitive use. However, it can also occur as a result of a dive/fall if the mechanism is just right.
     
    Another way the labrum can be injured is as a result of a shoulder dislocation. In the majority of cases, the ball dislocates out the front (anterior) of the socket, and the attachment of the labrum to the rim of the socket is damaged.
     
    A final way that I have seen labrum injuries in baseball players is in the front shoulder of hitters. Occasionally, as a result of an aggressive swing (or combination of swings) a player can damage the labrum in the back part (posterior) of the shoulder. This is also an injury that I sometimes see in golfers.
     
    In Javier’s case, the injury is to his left shoulder. As he is a right-handed hitter, this would be his front shoulder. I was not able to find any reports of him dislocating his shoulder last season (which would suggest an anterior labral tear). It is possible, then, that his labral tear is more in the back of the socket (though this is purely speculation on my part).
     
    Question 3: Why didn’t he just have surgery in the off-season to get this taken care of?
     
    This is always a difficult question to answer without knowing specifics of the situation. Hindsight is 20/20, but it is not always known at the time of an initial injury whether it is going to require surgery or whether rehab will be sufficient. Clearly, the Twins and Javier felt that rehab stood a reasonable chance of being successful, or I suspect surgery would have been undertaken previously.
     
    Question 4: What is done at surgery?
     
    There are subtle variations in technique for these type of injuries, but the majority are treated with arthroscopic surgery. This means a small fiber-optic camera is inserted into the shoulder, and the shoulder is filled with fluid. The labrum is then examined and the extent of the tear is assessed. Typically, the pre-op MRI will give the surgeon a good idea how extensive the tear is, but the precise size and location of the tear is not known until surgery.
     
    Once the tear has been assessed, the repair process begins. Small anchors (similar to plastic drywall screws) are inserted into the rim of the socket in the area of the labrum damage. These vary in size, but are typically somewhere around 3.0mm in diameter. These anchors have strong stitches attached. The stitches are passed around the labrum using special tools and the labrum is secured back to the rim of the socket. This process is repeated for as many anchors as are needed to completely repair the tear.
     
     
     
    After surgery, the small incisions are closed with suture and the patient heads to the recovery room. Surgery typically takes around 1-1.5 hours.
     
    Question 5: What happens after surgery? Why does it take so long to get back to full activity?
     
    Any time we repair a structure in orthopedics, the rate of healing is dependent on a number of factors. Some factors include the type of tissue injured, the severity of the injury, the age and health of the patient as well as numerous others.
     
    One helpful comparison in this case can be a fracture of a bone. Bone, as compared to cartilage (labrum) has a much greater blood supply. As such, most bone fractures are able to fully heal somewhere around 6-10 weeks (with some variability of course). Labrum (as with all cartilage) has a much poorer blood supply, and as a result takes a lot longer to heal. This is one of the main reasons for the lengthy rehab.
     
    In addition, the stresses placed on the shoulder are significant. The labrum has to withstand a tremendous amount of force when throwing a baseball or swinging a bat. The muscles around the shoulder tend to get weak quickly after surgery, and it takes time to rebuild the muscles. Proceeding too aggressively (before the muscles have recovered) places extra stress on the labrum, and can lead to failure of the repair to fully heal.
     
    Question 6: Will Javier’s shoulder ever be the same?
     
    This is perhaps the most difficult question to answer. Without knowing the extent and location of the damage, it is very difficult to comment on this subject. It is certainly better that this is his non-throwing shoulder, as that likely portends a better chance of full recovery. Few surgeons have done more of this type of surgery than Dr. Andrews, so he is in good hands.
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