The Dorsal Digital Nerves of a Male Viewed Posteriorly

Description

Dorsal cutaneous innervation of the male hand is traced from a posterior (dorsal) perspective, with dorsal digital nerves running distally over the metacarpals and along the dorsal aspects of the proximal and middle phalanges. Branches course superficially between and alongside the extensor tendons, then subdivide into fine terminal filaments toward the digits, where overlap between radial and ulnar dorsal digital territories is implied. Blue superficial veins and the extensor apparatus frame these nerves, while pale metacarpals and phalanges provide bony landmarks deep to the neurovascular plane. Clinically, this topography matters when planning dorsal approaches to the fingers and metacarpophalangeal region, where small cutaneous branches are prone to traction, cautery injury, or entrapment in scar. It also supports bedside teaching of sensory loss patterns after superficial radial nerve injury (for example, dorsal thumb and index web space) versus ulnar dorsal cutaneous nerve lesions affecting the ulnar dorsum and dorsal little finger. Clean surface anatomy, but without skin, makes the relationship to extensor tendon compartments and dorsal venous network easier to teach. Use this artwork in hand surgery atlases, peripheral nerve blocks teaching (superficial radial and ulnar dorsal cutaneous distributions), and anatomy lab manuals covering dorsal hand dissections and extensor mechanism orientation. It also fits exam prep materials that ask learners to map cutaneous territories on the dorsum of the hand while respecting the distal shift to palmar digital nerves near the nail beds. Anatomical accuracy verified by SciePro's Medical Advisory Board.