The ulnar nerve is decompressed in the wrist through Guyon’s canal and in the hand, specifically the deep motor branch of ulnar nerve. The deep motor branch of ulnar nerve is released by dividing the tendonious arch of the hypothenar muscles. In addition, a carpal tunnel release is performed by transecting the transverse carpal ligament.
Narration: Susan E. Mackinnon
Videography: Andrew Yee