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Updated: Jan 31, 2026

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Ulnar nerve transposition in the hand: a cadaveric study.

Steven Beldner1, Remy V Rabinovich2, Daniel B Polatsch1

  • 11 New York Hand & Wrist Center of Lenox Hill, New York, NY, USA.

The Journal of Hand Surgery, European Volume
|December 20, 2018
PubMed
Summary
This summary is machine-generated.

Excision of the hamate hook can shorten the ulnar nerve

Keywords:
Guyon’s canalUlnar nervedeep motor branchhamate hook

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Area of Science:

  • Hand surgery
  • Peripheral nerve repair
  • Anatomy

Background:

  • Primary nerve repair is ideal when tension-free.
  • Nerve grafting is an alternative when primary repair is not feasible.
  • The motor branch of the ulnar nerve's path can be circuitous.

Purpose of the Study:

  • To evaluate the impact of hamate hook excision on nerve-gap closure.
  • To assess the feasibility of primary ulnar nerve repair after hamate hook removal.

Main Methods:

  • Cadaveric dissection of six specimens.
  • Measurement of the motor branch of the ulnar nerve length before and after hamate hook excision and nerve transposition.
  • Statistical analysis of length changes.

Main Results:

  • Hamate hook excision and nerve transposition significantly shortened the motor branch of the ulnar nerve.
  • A mean reduction of 21% in nerve length was observed.
  • This facilitated tension-free nerve approximation.

Conclusions:

  • Hamate hook excision can facilitate primary nerve repair.
  • This technique may be beneficial for managing ulnar nerve defects in Guyon's canal.
  • It offers an alternative to nerve grafting in specific scenarios.