A rare anatomical variation of the hand lumbrical muscles: A case report and literature review

Abstract

We report a case of unusual anatomical variation and rare abnormality of the lumbrical muscles (LM) in a cadaver after dissection. Usually, the hand LM arises from the flexor digitorum profundus (FDP) tendons and inserts into the extensor hoods of the corresponding fingers. LM is fundamental in the performance of fine skillful movements of the hand.