Subacromial Bursa

Subacromial Bursa The structure indicated is the subacromial bursa. The glenohumeral joint is a synovial ball and socket joint between the head of the humerus and the glenoid cavity of the scapula. It is a joint with great mobility, at the expense of joint stability. Movements include: abduction, adduction, medial rotation, lateral rotation, flexion, extension, and circumduction. The joint is stabilised by, surrounding musculature, tendons, ligaments and the bony processes of adjacent structures. The synovial membrane lines the fibrous membrane of the joint capsule and it forms bursae as it passes through various openings in this membrane. Synovial bursae are …

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