Posterior Perspective of the Supraspinatus Under the Skin

Description

Seen from the posterior body surface, the paired supraspinatus muscles occupy the supraspinous fossae of the scapulae, lying superior to the scapular spine and deep to the overlying skin of the upper back. Each muscle belly courses laterally toward the acromion and the humeral head, where its tendon passes beneath the coracoacromial arch to blend with the rotator cuff at the greater tubercle. Midline landmarks include the spinous processes of the cervical and thoracic vertebrae, with ribs curving laterally from the thoracic spine; the proximal humeri sit lateral to the glenoid regions. Subtle bulk matters here. Posterior teaching views like this clarify why supraspinatus pathology so often presents as pain with abduction and why the tendon is vulnerable in the subacromial space. Impingement beneath the acromion and coracoacromial ligament, and degenerative tearing near the critical zone proximal to the greater tubercle, are easier to explain when the muscle’s line of pull and its relationship to the scapula and proximal humerus are fixed in the learner’s mind. It also frames common exam maneuvers, including the Jobe (empty can) test, and the surgical logic of subacromial decompression or rotator cuff repair where tendon excursion and footprint anatomy guide anchor placement. Use this asset in shoulder and upper limb anatomy modules, rotator cuff injury chapters in orthopedic or sports medicine texts, and patient education materials explaining subacromial impingement and supraspinatus tendinopathy in adult males. It also supports lecture slides on scapulohumeral rhythm by pairing scapular bony landmarks with the cuff’s superior component. Anatomical accuracy verified by SciePro's Medical Advisory Board.