上腕骨頭側で破断した中関節上腕靭帯断裂の1例

概要

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We report a rare case of humeral avulsion of middle glenohumeral ligament. A 35-year-old male, who had a 10-year career of gymnastics felt an apprehension of subluxation in his left shoulder. By moving his shoulder forward, he felt a subluxation and at the end stage of flexion he felt a click and a dull pain. Tenderness of rotator interval, crank test and relocation test were all positive. MRI revealed MGHL injury or HAGL lesion. Arthroscopic examination revealed humeral avulsion of middle glenohumeral ligament. Repair of MGHL by suture anchor method was performed. Postoperatively, there was good relief of pain and apprehension of subluxation. MGHL injury was mostly of joint side avulsion, humeral avulsion of MGHL injury was very rare. Diagnosis of MGHL injury is difficult, but careful inquiry into medical history and clinical examination can lead to proper diagnosis.