The dorsopalmar stability of the distal radioulnar joint

被引:202
作者
Stuart, PR [1 ]
Berger, RA [1 ]
Linscheid, RL [1 ]
An, KN [1 ]
机构
[1] Mayo Clin & Mayo Fdn, Orthoped Biomech Lab, Dept Orthoped Surg, Rochester, MN 55905 USA
来源
JOURNAL OF HAND SURGERY-AMERICAN VOLUME | 2000年 / 25A卷 / 04期
关键词
distal radioulnar joint; stability; biomechanics;
D O I
10.1053/jhsu.2000.9418
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Sixteen fresh-frozen adult human cadaveric upper extremities were used in a biomechanical analysis of distal radioulnar joint (DRUJ) stability. The relative contribution to stability of the DRUJ by the surrounding anatomic structures presumed to stabilize the joint was analyzed with respect to forearm rotation and wrist flexion and extension using a purpose-built 4-axis materials testing machine. The dominant structures stabilizing the DRUJ were the ligamentous components of the triangular fibrocartilage complex proper. The major constraint to dorsal translation of the distal ulna relative to the radius is the palmar radioulnar ligament. Palmar translation of the distal ulna relative to the radius is constrained primarily by the dorsal radioulnar ligament, with secondary constraint provided by the palmar radioulnar ligament and interosseous membrane. The ulnocarpal ligaments and extensor carpi ulnaris subsheath did not contribute significantly to DRUJ stability; however, approximately 20% of DRUJ constraint is provided by the articular contact of the radius and ulna. These relationships were consistent regardless of wrist position or degree of forearm rotation. (J Hand Surg 2000;25A: 689-699. Copyright (C) 2000 by the American Society for Surgery of the Hand).
引用
收藏
页码:689 / 699
页数:11
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