A variant of extensor medii proprius: A case report

Vic HOLMES, Hao (Howe) LIU, Ar

Abstract

A variant of the extensor medii proprius (EMP) was identified during routine dissection of the left hand of a 67-year-old female cadaver. The flat, fleshy muscle originated from the lunate bone, narrowed into a flat tendon near the 3rd metacarpophalangeal joint, and continued distally to insert on the extensor expansion of the 3rd digit. A branch from the posterior interosseous nerve was traced to the EMP. We propose that this previously unreported variation be termed extensor medii proprius brevis (EMPB).

Relevant Publications in International Journal of Anatomical Variations