Male Hand, Posterior View

Description

From a posterior (dorsal) view of the adult male manus, the distal forearm transitions into the dorsum of the hand where the extensor retinaculum spans transversely just proximal to the carpus and the extensor tendons fan distally toward the metacarpals and phalanges. Dorsal digital expansions are implied over the proximal phalanges, with the extensor digitorum tendons occupying the central dorsum and the extensor pollicis longus and brevis defining the radial side as they course toward the thumb. Superficial dorsal veins form a visible network over the metacarpal region, draining proximally toward the cephalic vein laterally and the basilic vein medially. Skin creases and bony contours of the metacarpal heads establish surface landmarks. Dorsal hand anatomy matters whenever swelling, laceration, or iatrogenic injury threatens tendon glide or venous access. Small transverse cuts over the metacarpophalangeal joints can violate the extensor hood and lead to extensor lag, while pain and tenosynovitis around the first dorsal compartment points clinicians toward de Quervain disease at the radial styloid. The superficial venous network also underpins dorsal hand cannulation, and its proximity to thin subcutaneous tissue explains why extravasation injuries can progress quickly. Use this artwork for gross anatomy and surface anatomy teaching in upper extremity modules, for emergency medicine and orthopaedic references on dorsal lacerations and extensor tendon zones, and for nursing and anesthesia materials illustrating dorsal venipuncture and IV placement. Anatomical accuracy verified by SciePro's Medical Advisory Board.