Related Experiment Video
Updated: Mar 8, 2026
05:18
Author Spotlight: Ultrasound-Guided Needle Release Combined with Corticosteroid Injection for the Treatment of Supinator Syndrome
Published on: May 26, 2023
1.9K
The effect of in-situ decompression on ulnar nerve stability: a cadaveric study
The Journal of Hand Surgery, European Volume
|January 25, 2017
Summary
Ulnar nerve decompression surgery does not cause nerve subluxation. This biomechanical study found no significant nerve translation, even after full decompression, ensuring ulnar nerve safety during the procedure.
Area of Science:
- Orthopedics
- Biomechanics
- Anatomy
Background:
- Ulnar nerve decompression is a common surgical procedure.
- Concerns exist regarding potential ulnar nerve subluxation post-decompression.
Purpose of the Study:
- To biomechanically assess ulnar nerve translation and subluxation after in situ decompression.
- To evaluate the effect of elbow flexion on nerve movement.
Main Methods:
- Ten cadaver arms underwent in situ ulnar nerve decompression in 5 mm increments.
- Elbows were flexed from 0-135° after each decompression.
- Ulnar nerve to medial epicondyle distance was measured to quantify translation/subluxation.
Main Results:
- No specimens exhibited ulnar nerve subluxation past the medial epicondyle.
- No statistically significant ulnar nerve translations were observed at any flexion angle or decompression extent.
Conclusions:
- In situ ulnar nerve decompression from the flexor carpi ulnaris aponeurosis to the intermuscular septum is biomechanically safe.
- The procedure does not lead to significant ulnar nerve translation or subluxation.
