The cadaver of a Caucasian man with a supernumerary fourth dorsal interosseous muscle in the right hand: A case report

Abstract

Introduction. The human hand is a complex anatomic entity consisting of many muscles, nerves, and vessels, thus providing a special ability to perform accurate and meticulous movements. In this group of muscles are the four dorsal interosseous muscles. Case presentation. A distinct supernumerary fourth dorsal interosseous muscle was found in the right hand of the cadaver of a 76-year-old Caucasian man without any other concomitant abnormality. Conclusions: The presence of such an additional muscle in the hand should be considered in the management of hand deformities, whether the treatment is conservative or surgical. © 2011 Natsis et al; licensee BioMed Central Ltd.