Anatomical Structure And Location Of Acromial Angle Of The Scapula

Description

Acromial angle of the scapula sits at the lateral bend where the crest of the scapular spine meets the lateral border of the acromion, forming a palpable corner on the posterosuperior shoulder. From a posterior-oblique shoulder-blade viewpoint, the scapular spine runs laterally and slightly superiorly from the medial border, then broadens into the acromion, which projects anteriorly over the glenohumeral joint toward the clavicle. The acromial angle lies lateral to the supraspinous fossa and superior to the infraspinous fossa, marking the transition from the thin scapular body to the thickened acromial process. Bone surface detail is emphasized. Clinically, the acromial angle is a reliable surface landmark for orienting shoulder examination and for describing fractures of the scapular spine and acromion, injuries that can follow a direct blow to the posterolateral shoulder. Its proximity to the acromioclavicular joint and subacromial space makes it a frequent reference point when teaching the scapulohumeral rhythm and the bony boundaries relevant to external impingement of the supraspinatus tendon and subacromial bursa. The fixed perspective clarifies how the spine-acromion junction creates a posterior “corner” that helps distinguish scapular landmarks during palpation, even when soft tissue obscures the underlying contour. Use this illustration in gross anatomy and musculoskeletal ultrasound courses to anchor scapular palpation landmarks (spine, acromion, acromial angle) before introducing rotator cuff pathology and AC joint sprain patterns. It also suits orthopedic and sports-medicine publications describing acromial and scapular spine fracture classifications, postoperative hardware positioning, or physical exam documentation of shoulder girdle tenderness and swelling. Anatomical accuracy verified by SciePro's Medical Advisory Board.