Kevin Kooi, Ingmar W F Legerstee, Eva van Vliet, Liliane A Freundt, Kristen Reikersdorfer, Neal C Chen, Kyle R Eberlin
BACKGROUND: The lumbrical muscles comprise 4 intrinsic muscles of the hand and are involved in flexion of the metacarpophalangeal joint (MCPJ) and extension of the proximal interphalangeal and distal interphalangeal joints. The purpose of this study was to investigate the anatomical mechanics of the lumbrical muscles of the index, middle, ring, and small fingers. METHODS: We evaluated 25 cadaver arms and measured the distance between the MCPJ and fingertip, the distance between the MCPJ and lumbrical muscle insertion, and the distance between the MCPJ and the most proximal lumbrical muscle origin...
March 29, 2024: Hand: Official Journal of the American Association for Hand Surgery