Yes a hamstring injury is NEVER "just a hamstring", it's one of the most important muscles for an athlete in general but it is also one of the most vulnerable to damage. The injury differs based upon the severity of the grade (I, II, or III) as well as where the injury occurred (was it in the belly of the muscle, tendon insertion or origin) in addition to the fact of which one of the hamstring muscles it was (semitendinosus, semimembranosus, biceps femoris). So a "just hamstring" injury can be anywhere from two week layoff to eight-ten week layoff or longer if it's "hamstring syndrome" or needs surgery. That is all for Dr. Tarr's injury synopsis for today