61-year-old male with left hip pain and thigh pain. Since the prior exam, there is increased signal intensity within the imaged semimembranosus tendon and new increased signal intensity within the muscle belly. There is now a complete full-thickness tear of the semimembranosus with at least 4 cm retraction of the muscle tendon. There is significantly increased fluid signal intensity/edema surrounding the semimembranosus, posterior compartment, and surrounding subcutaneous tissue. Interfascial edema is also noted between the quadratus femoris and proximal adductor magnus muscle. The conjoined tendon shows increased signal intensity. It is difficult to follow the tendon to its origin on the inferomedial facet of the ischial tuberosity. The marrow signal intensity of the ischium is normal. There is thickening of the distal tendon of the rectus femoris due to an old injury. Marrow edema of the patella.
1.Complete, full-thickness tear of the semimembranosus with increased edema/fluid as described above. 2.Signal abnormality within the conjoined tendon with difficulty following the tendon to its origin.