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Obturator externus tear-MRI

Football injury shows altered signal intensity in the obturator externus with minimal surrounding fluid consistent with partial tear. 

Anatomical note: The obturator externus muscle is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis. It arises from the margin of bone immediately around the medial side of the obturator foramen, from the inferior ramus of the pubis, and the ramus of the ischium; it also arises from the medial two-thirds of the outer surface of the obturator membrane, and from the tendinous arch which completes the canal for the passage of the obturator vessels and nerves. The fibers converge and pass posterolateral and upward, and end in a tendon which runs across the back of the neck of the femur and lower part of the capsule of the hip joint and is inserted into the trochanteric fossa of the femur.

Obturator externus tear-MRI Reviewed by Sumer Sethi on Tuesday, November 04, 2014 Rating: 5

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