Anatomical Structure And Location Of The Scapular Glenoid Fossa

Description

Glenoid fossa of the scapula occupies the lateral angle of the shoulder blade, forming the scapular side of the glenohumeral joint. From a lateral, slightly posterolateral (dorsal) perspective, the flattened articular surface sits immediately lateral to the scapular neck, with a subtly elevated bony rim that outlines the glenoid cavity. Superiorly, the supraglenoid tubercle marks the origin of the long head of biceps brachii, while the infraglenoid tubercle lies inferiorly for the long head of triceps brachii; the base of the coracoid process arises anterosuperior to the fossa and the acromion projects superiorly over the joint space. Orientation is explicit. This relationship matters when teaching why the shoulder trades stability for range. The shallow osseous socket relies on the glenoid labrum and capsuloligamentous restraints, so an anteroinferior glenoid rim lesion (Bankart fracture) after anterior dislocation directly compromises containment of the humeral head, and even modest glenoid bone loss can alter surgical planning for arthroscopic stabilization versus bony augmentation (Latarjet). The crisp delineation of the rim and tubercles supports discussion of tendon origins, labral attachment, and the typical direction of traumatic defects on the glenoid face. Use this illustration in upper limb anatomy labs, orthopedic and sports medicine slide decks on shoulder instability, and textbook figures covering scapular landmarks, glenoid version, and arthroplasty component positioning where the lateral angle and scapular neck serve as bony references. Anatomical accuracy verified by SciePro's Medical Advisory Board.