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The anterior portion of the joint capsule of the shoulder must be cut to view the cavity of the shoulder joint (Figure 10.3 and Figure 10.4). With the arm rotated laterally to expose the cavity of the glenohumeral joint, the articular surface of the head of the humerus and tendon of the long head of Biceps brachii can be seen.With the arm further displaced from the glenohumeral joint, identify the articular surface of the glenoid fossa, glenoid labrum, and synovial membrane which lines the non-articular surfaces of the articular capsule. (High magnification view of the glenohumeral joint with the anterior aspect of the capsule reflected medially by forceps).
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