Little Finger

Description

Centered on the left fifth digit, the dorsal surface of the little finger is isolated by a blue overlay that tracks from the metacarpophalangeal (MCP) region to the distal phalanx and nail unit. Dorsally, the nail plate and proximal nail fold sit over the distal phalanx, while the distal interphalangeal (DIP) joint lies just proximal to the hyponychium and the proximal interphalangeal (PIP) joint divides the middle and proximal phalanges. Along the ulnar border of the digit (medial in standard anatomical position), the soft tissue contour narrows distally, and the finger aligns proximally with the head of the fifth metacarpal on the dorsum of the hand. Dorsal views of the little finger matter because extensor mechanism injuries declare themselves on this surface, and the clinical exam depends on recognizing where joint lines fall relative to the nail and skin creases. Forced flexion at the DIP joint can rupture the terminal extensor tendon, producing mallet finger with an extension lag localized to the distal phalanx, while PIP hyperextension can disrupt the volar plate and collateral ligaments even when dorsal swelling makes landmarks hard to judge. The ulnar-sided location also helps you localize sensory symptoms, since the dorsal ulnar cutaneous branch contributes to dorsal hand innervation proximal to the digit, whereas the proper digital nerves dominate sensation at the fingertip. Clean isolation against a white background makes this asset a reliable choice for hand anatomy labs, surface anatomy teaching, and dermatology or emergency medicine content where side, digit number, and dorsal versus palmar orientation must be unambiguous. It also fits patient-facing materials on finger sprains, mallet finger splinting, nail bed trauma, or postoperative instructions after fifth digit procedures. Anatomical accuracy verified by SciePro's Medical Advisory Board.