Anterior Perspective of the Supraclavicular Nerve

Description

Emerging from the cervical plexus at the posterior border of the sternocleidomastoid (near Erb point), the supraclavicular nerve descends as medial, intermediate, and lateral branches toward the clavicle. From an anterior perspective, these cutaneous nerves course inferiorly and laterally across the root of the neck, crossing superficial to the clavicle to reach the skin over the superior shoulder and pectoral region. The sternocleidomastoid lies anteromedially, while the trapezius occupies the posterolateral neck, framing the supraclavicular fossa through which the nerve branches spread. Superficial veins in the lower neck and the superficial cervical lymph nodes sit in the same corridor. Orientation here matters because the supraclavicular nerves are the sensory targets in a superficial cervical plexus block and are also vulnerable during clavicle fixation and neck dissections along the posterior triangle. The branches traverse near the external jugular vein and superficial lymphatic chains, and they are easily transected when raising subplatysmal flaps or when placing incisions parallel to the clavicle, leading to persistent numbness or dysesthesia over the shoulder “cape” region. Small nerves, common complaints. Use this artwork to teach cervical plexus topography in gross anatomy and regional anesthesia modules, to illustrate cutaneous innervation patterns in clinical skills texts, or to support operative atlases discussing clavicular ORIF, lymph node biopsy, and lateral neck approaches. Anatomical accuracy verified by SciePro's Medical Advisory Board.