Kinematics of the trapeziometacarpal joint after sectioning of ligaments

Journal of Orthopaedic Research - Tập 12 Số 2 - Trang 205-210 - 1994
Toshihiko Imaeda1, Glen L. Niebur1, Kai‐Nan An2, William P. Cooney1
1Mayo Clinic Rochester-MN
2Biomechanics Laboratory, Department of Orthopedics, Clinic/Mayo Foundation, Rochester, Minnesota, U.S.A.

Tóm tắt

AbstractThis study was designed to examine the roles of ligaments in the maintenance of the articular kinematics of the trapeziometacarpal joint. Circumduction of the trapeziometacarpal joint was studied in 12 hands from fresh human cadavera. With use of a magnetic tracking system, changes in the motion of the base of the first metacarpal after ligament sectioning were analyzed and compared with those of the normal joint. Two sets of ligaments were sectioned: (a) the anterior oblique and ulnar collateral ligaments and (b) the first intermetacarpal ligament and the ulnar joint capsule. Sectioning of the anterior oblique and ulnar collateral ligaments resulted in a significant dorsal‐ulnar shift in the path of the base of the first metacarpal. However, sectioning of the first intermetacarpal ligament did not affect the movement pattern of the center of the base. The anterior oblique and ulnar collateral ligaments provided constraint of the trapeziometacarpal joint during circumduction of the thumb.

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