Related Experiment Video
Updated: Jul 9, 2026

Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
Published on: January 11, 2019
Sensory communication of the median and ulnar nerves in the palm
Sam J Biafora1, Mark H Gonzalez
1Department of Orthopaedic Surgery, University of Illinois Medical Center, Chicago, IL, USA.
Abstract:
A communicating branch between the median and superficial ulnar nerve in the palm of the hand has been described, but its relationship to the cutaneous anatomy of the hand has had little emphasis. Fifty preserved cadaveric hands were dissected. A communicating branch was found in 37 of 50 specimens. In 34 specimens, the connecting branch proceeded from the ulnar nerve to enter the median nerve distally; in three specimens it proceeded from the median nerve to reach the ulnar nerve distally. This study describes the communicating branch in relation to the distal crease of the wrist with the axis of the third webspace and fifth ray as the radial and ulnar borders, respectively. This study may aid surgeons in determining the likelihood of injury in trauma or during various surgical procedures.
Related Concept Videos
Spinal Nerves: Plexus I
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
Bones of the Upper Limb: Ulna
Major Somatic Sensory Pathways
Arteries of the Upper Limbs
Somatosensation
Bones of the Upper Limb: Radius
The radius has a nail-shaped head, and a short...