Glenoid Fossa Of The Scapula, Lateral View

Description

Glenoid fossa of the scapula occupies the lateral angle, forming the articular socket for the humeral head. From a lateral perspective, the smooth, slightly concave glenoid cavity sits medial to the expected position of the humeral head and lateral to the scapular neck, with the glenoid rim defining the transition from articular surface to cortical bone. Superiorly, the supraglenoid tubercle lies at the upper margin where the long head of biceps brachii takes origin, while the infraglenoid tubercle anchors the long head of triceps brachii inferiorly. Bone contours are crisp. Orthopedic relevance centers on the mismatch between the shallow glenoid cavity and the large humeral head, a relationship that predisposes the shoulder to anterior instability when the anteroinferior rim and labral attachment are injured (classic Bankart lesion after anterior dislocation). The lateral view makes the glenoid version and the slope of the inferior glenoid easier to judge, which matters when teaching why recurrent instability can persist after a first-time dislocation or when planning bony augmentation procedures such as a Latarjet. Surface landmarks around the glenoid neck also help clarify where surgeons place reamers and grafts during total shoulder arthroplasty and reverse arthroplasty, where baseplate positioning depends on accurate appreciation of the glenoid face. Use this illustration in gross anatomy labs to orient students to scapular lateral angle anatomy, and in sports medicine or arthroscopy education to pair glenoid rim pathology with capsulolabral repair concepts and portal planning. It also fits shoulder chapters in orthopedic texts, patient education handouts on dislocation, and radiology teaching files when correlating CT-based glenoid bone loss measurements with surgical decision-making. Anatomical accuracy verified by SciePro's Medical Advisory Board.