Kinematics and laxity of ulnohumeral joint under valgus-varus stress

Shinji Tanaka, Kai Nan An, Bernard F. Morrey

研究成果: Article同行評審

33 引文 斯高帕斯(Scopus)


Three-dimensional kinematics of the ulnohumeral joint under simulated active elbow joint flexion-extension was obtained by using an electromagnetic tracking device. The joint motion was analyzed based on Eulerian angle description. In order to minimize the effect of "downstream cross-talk" on calculation of the three Eulerian angles, an optimal axis to best represent flexion-extension of the elbow joint was established. This axis, on average, is close to the line joining the centers of the capitellum and the trochlear groove. Furthermore, joint laxity under valgus-varus stress was also examined. With the weight of the forearm as the stress, maximums of 7.6° valgus-varus laxity and 5.3° axial rotation laxity were observed within a range of elbow flexion. The results of this study provide useful baseline information on joint laxity for the evaluation of elbow joints with implant replacements and other surgical treatment modalities.

頁(從 - 到)45-54
期刊Journal of Musculoskeletal Research
出版狀態Published - 1998 三月

All Science Journal Classification (ASJC) codes

  • 骨科和運動醫學


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