18-year-old male with a proximal hamstring injury. Assess for stress fracture. Presents with left leg pain. There is peripheral increased signal abnormality along the anterior aspect of the semimembranosus and biceps femoris at the level of the myotendinous junction consistent with a strain. There is a punctate focus of increased fluid signal abnormality within the semimembranosus tendon at the level of its insertion on the left inferior pubic ramus consistent with a small interstitial tear (image 55, series 9). The hamstring musculature and tendons otherwise appear intact. There is no evidence of a full-thickness or near full-thickness tear of the hamstring tendons. The remainder of the visualized musculature of the thigh is normal in appearance. No bone marrow signal abnormality is identified to suggest a stress reaction/fracture.
Findings consistent with a strain of the semimembranosus and biceps femoris muscles as well as a very small interstitial tear of the semimembranosus tendon as described above, without evidence of a full-thickness or near full-thickness tear. No evidence of stress reaction/fracture.