39-year-old female with left hamstring pain. There is abnormal fluid signal intensity seen within the left proximal semimembranosus tendon near its insertion at the ischial tuberosity, most compatible with partial tear. No retraction or buckling of the tendon is seen. Small amount of abnormal fluid signal is also seen involving the conjoined tendon of semimembranosus and biceps femoris at the ischial tuberosity. Lastly, a small amount of edema signal is seen within the ischial tuberosity itself near the insertion of the aforementioned tendons. Otherwise, there is normal signal intensity seen within the soft tissues and bones elsewhere in the left thigh.
Findings most compatible with mild avulsion injury and partial tearing of the semimembranosus and conjoined tendon at the ischial tuberosity. The tendons appear intact with no retraction or buckling seen.