Shoulder joint: anatomy, movements, stability and applied anatomy
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Shoulder (glenohumeral) joint: ball-and-socket synovial joint between the head of humerus and the glenoid cavity of scapula.
Primary articulation of the four-joint shoulder girdle complex (glenohumeral, acromioclavicular, sternoclavicular and scapulothoracic); the most mobile and least stable joint in the body.
Type and Articular Surfaces
Ball-and-socket type synovial joint.
Formed by the head of humerus articulating with the glenoid cavity of scapula, deepened by the glenoid labrum.
Head of humerus is large and round; glenoid cavity is relatively shallow; glenoid labrum is a fibrocartilaginous ring.