Ulnar neuropathy at the wrist is an uncommon disease and pure ulnar sensory neuropathy at the wrist is even rarer. It is difficult to diagnose pure ulnar sensory neuropathy at the wrist by conventional methods. We report a
case
of pure ulnar sensory neuropathy at the hypothenar area. The lesion was localized between 3 cm and 5 cm distal to pisiform using orthodromic inching test of ulnar sensory nerve to stimulate at three points around the hypothenar area. Ultrasonographic examination confirmed compression of superficial sensory branch of the ulnar nerve. Further, surgical exploration reconfirmed compression of the ulnar nerve. This case report demonstrates the utility of orthodromic ulnar sensory inching test.

Citations

• Neurological improvement following revision of vascular graft remnants in the upper extremity
  Marie Bigot, Sima Vazquez, Sateesh Babu, Suguru Ohira, Ramin Malekan, Igor Laskowski, Jared Pisapia
  Journal of Vascular Surgery Cases, Innovations and Techniques.2024; 10(4): 101539.     CrossRef
• Localization of Ulnar Neuropathy at the Wrist Using Motor and Sensory Ulnar Nerve Segmental Studies
  Ki Hoon Kim, Beom Suk Kim, Min Jae Kim, Dong Hwee Kim
  Journal of Clinical Neurology.2022; 18(1): 59.     CrossRef