Digits of the Male Hand, Posterior View

Description

Dorsal surface anatomy of the male manus is presented with focus on digits II to V and the pollex, showing the posterior contours from the metacarpophalangeal joints distally to the fingertips. The proximal, middle, and distal phalanges align in longitudinal axes, with the proximal interphalangeal and distal interphalangeal joint creases implied by surface contour along the dorsal aspect. Nail plates occupy the dorsal distal phalanges, while the extensor tendons course centrally over each digit toward the extensor expansions, flanked by the lateral soft tissue margins of the fingers. Overall width increases proximally toward the metacarpal region, with digits tapering distally and the thumb set more lateral and slightly anterior relative to the plane of the dorsum. Posterior hand views matter when teaching and documenting extensor-side landmarks that patients and clinicians recognize without disrobing beyond the hand. Dorsal swelling or tenderness over the metacarpophalangeal joints, such as synovitis in rheumatoid arthritis, is commonly assessed from this aspect and contrasts with palmar pathology like trigger finger that localizes volarly at the A1 pulley. It also supports clinical communication around common dorsal injuries, including mallet finger (terminal extensor tendon disruption at the distal interphalangeal joint) and boutonniere deformity (central slip injury at the proximal interphalangeal joint), where surface posture and joint alignment tell the story. Suitable for gross anatomy and surface anatomy coursework, occupational and hand therapy patient education, and orthopedic or rheumatology publications illustrating dorsal digit inspection points and descriptive terminology. Useful in clinical documentation templates where consistent posterior-view orientation improves side-to-side comparisons. Anatomical accuracy verified by SciePro's Medical Advisory Board.