Which muscle does NOT contribute to dorsal digital expansion: (A) Interossei, (B) Lumbricals, (C) Extensor digitorum, (D) Adductor pollicis
Answer is D. Dorsal digital expansion is a tendinous modification of extensor digitorum and receives attachment of lumbricals, interossei but not adductor pollicis. Lumbricals andinterossei- MCP Flexion & IP extension their attachments to dorsal digital Expansion