Thorax, Posterior View, Black

Description

Posterior thoracic surface anatomy is presented on a Black adult female, with the scapular girdle and dorsal thorax highlighted to emphasize the superficial musculature. The trapezius spans from the superior nuchal line and thoracic spinous processes to the lateral clavicle, acromion, and scapular spine, sitting superficial and medial to the deltoid at the shoulder contour. Inferolaterally, the latissimus dorsi forms the posterior axillary fold and sweeps from the thoracolumbar fascia toward the intertubercular sulcus of the humerus, draping over the lower ribs and covering deeper layers such as the rhomboids and erector spinae. Arms are held slightly abducted with forearms supinated, opening the posterior axillary region for clear orientation. This posterior view matters when teaching scapulothoracic mechanics and the muscular boundaries clinicians palpate every day. Weakness or denervation of trapezius (spinal accessory nerve) alters shoulder elevation and scapular rotation, a common postoperative issue after posterior triangle lymph node dissection, while latissimus dorsi is a key donor in myocutaneous flap reconstruction and is traversed by the thoracodorsal neurovascular bundle. Surface landmarks along the medial scapular border and posterior axillary fold also guide safe needle placement and help avoid iatrogenic injury during procedures near the chest wall. Use this asset in gross anatomy and kinesiology courses to pair posterior thorax myology with ribcage and scapular landmark identification, and in surgical or rehabilitation publications discussing accessory nerve palsy, scapular dyskinesis, or latissimus dorsi flap planning. It also supports patient-facing education on upper back pain patterns and posture-related muscle strain with accurate regional context. Anatomical accuracy verified by SciePro's Medical Advisory Board.