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The dorsal carpal ligaments: their anatomy and function.

T Mizuseki¹, Y Ikuta

¹Hiroshima Prefectural Rehabilitation Center, Japan.

Journal of Hand Surgery (Edinburgh, Scotland)

|February 1, 1989

Summary

The dorsal carpal ligaments, crucial for wrist stability, exhibit varied structures. The dorsal radio-carpal ligament shows four subtypes, with specific ligaments and tendons acting as key dorsal wrist stabilizers.

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Area of Science:

Anatomy
Orthopedics
Biomechanics

Background:

The dorsal carpal ligaments are essential for wrist joint stability.
Understanding their anatomical variations is critical for diagnosing and treating wrist injuries.

Purpose of the Study:

To investigate the anatomical variations of the dorsal carpal ligaments.
To identify the primary stabilizing structures of the dorsal wrist.

Main Methods:

Dissection of 50 embalmed human wrists.
Detailed examination and classification of the dorsal carpal ligamentous structures.

Main Results:

The radial collateral ligament was consistently thin and oblique.
The dorsal radio-carpal ligament displayed four distinct subtypes.
The ulnar collateral ligament and dorsal radio-ulnar ligament were not discrete but part of confluent soft tissues.
The dorsal radio-carpal ligament, triangular fibro-cartilage complex, fibrous septa, and extensor tendons were identified as key dorsal stabilizers.

Conclusions:

Dorsal wrist anatomy is variable, particularly the dorsal radio-carpal ligament.
A combination of ligaments, fibro-cartilage complex, and tendons provides dorsal wrist stability.

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