Detailed Depiction of the Dorsal Surfaces of the Digits of the Male Hand, Posterior View

Description

Dorsal skin and subcutaneous contours of digits II through V are presented in posterior view, with the nail plates and distal phalanges defining each fingertip and the proximal phalanges widening toward the metacarpophalangeal joints. Extensor tendon silhouettes can be inferred along the dorsum of the fingers, where the extensor expansions spread distally over the proximal interphalangeal joints and continue toward the distal interphalangeal joints. Interdigital webs sit proximally between adjacent digits, while the dorsal digital creases mark each interphalangeal level along the back of the hand. Posterior dorsal finger anatomy matters when you need surface landmarks that correlate with extensor mechanism injury. Boutonniere deformity (central slip disruption) and mallet finger (terminal extensor tendon rupture at the distal phalanx) both declare themselves on the dorsum, and the relationship of the extensor hood to the PIP and DIP joints helps explain the resulting posture and loss of active extension. Clean dorsal contours also guide safe placement of dorsal incisions and pin sites, where the extensor tendons lie superficially and adherence or scarring can limit glide. Superficial structures, minimal margin for error. Common use cases include orthopedic and plastic surgery texts on hand trauma, emergency medicine teaching on finger injuries, and anatomy lab materials that train learners to match dorsal surface creases to underlying joints during examination. It also suits patient-facing education on dorsal lacerations, nail bed trauma, and extensor tendon repair, where a straightforward posterior view reduces ambiguity. Anatomical accuracy verified by SciePro's Medical Advisory Board.