A Posterior View of the Long Thoracic Nerve in a Male

Description

Arising from the anterior rami of C5 to C7 at the roots of the brachial plexus, the long thoracic nerve courses inferiorly along the lateral thoracic wall on the superficial surface of the serratus anterior but deep to the scapula and its periscapular musculature. From a posterior perspective, the vertebral column sits midline with ribs sweeping laterally, while each scapula overlies the posterior thoracic cage, framing the nerve’s descent along the medial border region of the scapula. Proximal cervical contributions appear superior and medial near the lower neck, then the nerve tracks distally and slightly anterior as it approaches the mid-axillary line. Bony landmarks anchor the orientation. This angle matters when teaching scapulothoracic mechanics and when explaining why long thoracic nerve palsy produces medial scapular winging that becomes most apparent during forward flexion or a wall push-up. Surgical and iatrogenic relevance is concrete: the nerve is vulnerable during axillary lymph node dissection, mastectomy, and chest tube placement, and its long, relatively superficial course makes traction injuries more likely with overhead activity or blunt lateral thoracic trauma. Clear appreciation of its relationship to the ribs and scapular borders helps distinguish winging from spinal accessory nerve injury affecting trapezius, which shifts the scapula differently and alters shoulder shrug strength. Use this artwork in gross anatomy labs to orient students to the long thoracic nerve’s origin from the brachial plexus roots and its distal trajectory toward serratus anterior. It also fits surgical education materials for breast and thoracic procedures, and clinical handouts for evaluating scapular winging in sports medicine or neurology clinics. Anatomical accuracy verified by SciePro's Medical Advisory Board.