Palmar Surface Showing the Male Interdigital Spaces

Description

Palmar anatomy of a male hand is presented with emphasis on the interdigital webspaces (spatia interdigitalia) between the index, middle, ring, and little fingers, extending proximally into the intermetacarpal spaces between metacarpals II through V. Fibrous septa and palmar aponeurotic expansions form the superficial boundaries of each cleft, while deeper planes imply the interosseous compartments and lumbrical origins along the tendons of flexor digitorum profundus. The webspaces sit distal to the metacarpal heads and proximal to the bases of the proximal phalanges, with each cleft widening laterally and narrowing toward the midline of the palm. Clear landmarks. These interdigital spaces matter because they are where infection, contracture, and neurovascular compromise declare themselves early, and a palmar view is the one you use when planning incisions that must respect the common palmar digital arteries, veins, and the common digital nerves as they course toward the finger bases. Dupuytren disease often begins as pretendinous and spiral cord formation that tethers skin and narrows the clefts, while deep space infections can track from a puncture wound in a webspace into the midpalmar or thenar spaces through the intermetacarpal pathways. For surgical teaching, this is the orientation used for webspace release and Z-plasty planning in post-burn syndactyly. Use this illustration for gross anatomy labs covering the palm and digits, for hand surgery texts discussing interdigital incisions, and for dermatology or wound-care materials that document webspace maceration, fissuring, and interdigital fungal infection patterns. Anatomical accuracy verified by SciePro's Medical Advisory Board.