関節窩後方に剥離骨片を認めた外傷性肩関節後方不安定症の1例

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Recurrent posterior instability of the shoulder is a relatively rare condition and remains a challenge to treat surgically. A posterior shoulder instability with reverse osseous Bankart lesion is rare. There have been only a few reports in the literature. A case of a posterior shoulder instability with reverse osseous Bankart lesion in a college football player was reported. He felt pain and an unstable feeling in his left shoulder at tackle or during bench press following a traumatic accident in a football game. He had posterior apprehension, pain with posterior stress, and a characteristic “jerk” test with the arm at 90° of forward elevation and internal rotation. 3D-CT revealed a reverse osseous Bankart lesion, osseous avulsion fracture at the posterior aspect of the glenoid rim at the insertion of the posterior band of the inferior glenohumeral ligament. Magnetic resonance arthrography showed a redundancy of the posteroinferior capsule and increased joint volume. Posterior labral repair and superior shift of the posteroinferior aspect of the capsule were done with use of two suture anchors in an arthroscopic procedure. His shoulder was immobilized with a sling for 3 weeks. He was allowed to return to full competition at 6 months after surgery. At 2-years after the surgery, he had a stable shoulder and was able to return to football activities with no limitation. Arthroscopic procedures for a traumatic unidirectional posterior shoulder instability with reverse bony Bankart lesion provide satisfactory results.
2010-08-04

関節窩後方に剥離骨片を認めた外傷性肩関節後方不安定症の1例

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