Related Experiment Video
Updated: Oct 5, 2025

Metacarpal Small Incision for Carpal Tunnel Syndrome
Published on: April 5, 2024
Cross-sectional changes of the distal carpal tunnel with simulated carpal bone rotation
1Hand Research Laboratory, Department of Orthopaedic Surgery, University of Arizona College of Medicine, Tucson, Arizona, USA.
Abstract:
This study simulated the cross-sectional changes in the distal carpal tunnel resulting from inward rotations of the hamate and trapezium. Rotations which decreased the carpal arch width, increased the carpal arch area. For example, simultaneous rotation of 5 degrees around the hamate and trapezium centroids decreased the carpal arch width by 1.69 ± 0.17 mm and increased the carpal arch area by 6.83 ± 0.68 mm2. Although the bone arch area decreased, decompression of the median nerve would likely occur due to the adjacent location of the nerve near the transverse carpal ligament.
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