Scapula- glenoid cavity

Posterior view, right side Anterior view, right side

Posterior view, left side

The glenoid cavity of the scapula is the articulating surface for the scapula of the glenohumeral joint that articulates with the head of the humerus. This is a ball and socket joint (triaxial) in that it allows for flexion/extension, abduction/adduction (and circumduction) and rotation of the arm.