Digits of the Hand

Description

Dorsal aspect of the hand is presented with the digits extended in anatomical position, the blue nitrile or latex glove closely contouring the distal, middle, and proximal phalanges and the intervening distal interphalangeal (DIP), proximal interphalangeal (PIP), and metacarpophalangeal (MCP) joints. Along the dorsal midline of each finger, the glove’s tension traces the course of the extensor expansion (dorsal digital expansion) as it spreads over the PIP joint and continues distally toward the terminal tendon insertion on the base of the distal phalanx. More proximally, the dorsum of the hand transitions to the distal forearm skin of a Black female subject, with the wrist lying proximal to the metacarpals and the fingers oriented distally against a clean white studio background. No distractions. Just anatomy. Dorsal digit anatomy is where extensor tendon injuries declare themselves, and this view aligns with how clinicians inspect for mallet finger (terminal extensor tendon disruption at the DIP) and boutonniere deformity (central slip injury over the PIP with secondary DIP hyperextension). The dorsal surface also frames the nail unit (nail plate and underlying nail bed, although concealed by the glove) and the typical sites for dorsal lacerations that can disrupt the sagittal bands at the MCP and cause extensor tendon subluxation. For teaching surface anatomy, the dorsal orientation clarifies why swelling at the PIP can limit extension even when flexor function is intact. Medical educators can place this image in hand and upper limb modules to orient students to phalanx sequence, joint naming, and extensor mechanism topography without the visual noise of palmar creases. It also suits clinical skills manuals, occupational therapy handouts, and infection-control or PPE training materials where a gloved dorsal hand is the reference posture for inspection and documentation. Anatomical accuracy verified by SciePro's Medical Advisory Board.