Anatomy of the Thumb Metacarpophalangeal Ulnar and Radial Collateral Ligaments

Carlson MG, Warner KK, Meyers KN, et al (Hosp for Special Surgery, NY; Mayo Clinic, Rochester, MN) J Hand Surg 37A:2021-2026, 2012^§

Abstract

Purpose

To describe the origin and insertion of the ulnar (UCL) and radial collateral ligaments (RCL) of the thumb metacarpophalangeal (MCP) joint.

Methods

We dissected 18 UCLs and 18 RCLs from fresh-frozen human cadaveric thumbs. We removed all soft tissue overlying the MCP joint, isolating the proper collateral ligaments. We detached the collateral ligaments from the bone while marking their origin and insertion points and measured these attachment sites in relation to bony landmarks by digital photo analysis.

Results

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