TY - JOUR
T1 - An anatomic study of the stabilizing ligaments of the trapezium and trapeziometacarpal joint
AU - Bettinger, Paul C.
AU - Linscheid, Ronald L.
AU - Berger, Richard A.
AU - Cooney, William P.
AU - An, Kai Nan
N1 - Funding Information:
From the Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic and Mayo Foundation, Rochester, MN. Supported in part by the Riordan-Brand Research Grant, Hand Biomechanics Lab, Sacramento, CA. Received for publication November 3, 1997; accepted in revised form February 26, 1999. No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article. Reprint requests: Kai-Nan An, PhD, Mayo Clinic Biomechanics Laboratory, 200 First St SW, Rochester, MN 55905. Copyright © 1999 by the American Society for Surgery of the Hand 0363-5023/99/24A04-0022$3.00/0
PY - 1999/7
Y1 - 1999/7
N2 - We provide a detailed and comprehensive anatomic description of the ligaments stabilizing the trapezium and trapeziometacarpal joint. Sixteen ligaments were identified. Fourteen ligaments inserted onto the trapezium and 2 others attached independently to the thumb metacarpal. The ligaments inserting onto the trapezium were the superficial anterior oblique, deep anterior oblique (beak ligament), dorsoradial, posterior oblique, ulnar collateral, dorsal trapezio-trapezoid, volar trapezio-trapezoid, dorsal trapezio-second metacarpal; volar trapezio-second metacarpal, trapezio-third metacarpal, volar scaphotrapezial, radial scaphotrapezial, transverse carpal, and trapezio-capitate ligaments. The remaining 2 ligaments attach onto the thumb metacarpal and are the proper intermetacarpal and the dorsal intermetacarpal. The dorsoradial and deep anterior oblique ligaments play a substantial role in stabilizing the trapeziometacarpal joint, and the deep anterior oblique ligament may function as a pivot for the first metacarpal during palmar abduction to allow rotation (pronation). The dorsal trapezio- second metacarpal, volar trapezio-second metacarpal, and trapezio-third metacarpal ligaments function as tension bands and are required to prevent instability from cantilever bending forces on the trapezium.
AB - We provide a detailed and comprehensive anatomic description of the ligaments stabilizing the trapezium and trapeziometacarpal joint. Sixteen ligaments were identified. Fourteen ligaments inserted onto the trapezium and 2 others attached independently to the thumb metacarpal. The ligaments inserting onto the trapezium were the superficial anterior oblique, deep anterior oblique (beak ligament), dorsoradial, posterior oblique, ulnar collateral, dorsal trapezio-trapezoid, volar trapezio-trapezoid, dorsal trapezio-second metacarpal; volar trapezio-second metacarpal, trapezio-third metacarpal, volar scaphotrapezial, radial scaphotrapezial, transverse carpal, and trapezio-capitate ligaments. The remaining 2 ligaments attach onto the thumb metacarpal and are the proper intermetacarpal and the dorsal intermetacarpal. The dorsoradial and deep anterior oblique ligaments play a substantial role in stabilizing the trapeziometacarpal joint, and the deep anterior oblique ligament may function as a pivot for the first metacarpal during palmar abduction to allow rotation (pronation). The dorsal trapezio- second metacarpal, volar trapezio-second metacarpal, and trapezio-third metacarpal ligaments function as tension bands and are required to prevent instability from cantilever bending forces on the trapezium.
KW - Anatomy
KW - Basal joint
KW - Ligament
KW - Trapeziometacarpal joint
KW - Trapezium
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U2 - 10.1053/jhsu.1999.0786
DO - 10.1053/jhsu.1999.0786
M3 - Article
C2 - 10447171
AN - SCOPUS:0032766085
SN - 0363-5023
VL - 24
SP - 786
EP - 798
JO - Journal of Hand Surgery
JF - Journal of Hand Surgery
IS - 4
ER -