3-DIMENSIONAL KINEMATICS OF GLENOHUMERAL ELEVATION

被引:144
作者
AN, KN
BROWNE, AO
KORINEK, S
TANAKA, S
MORREY, BF
机构
[1] Biomechanics Laboratory, Department of Orthopedics, Mayo Clinic, Mayo Foundation, Rochester, Minnesota
关键词
GLENOHUMERAL JOINT; ARM ELEVATION; SHOULDER;
D O I
10.1002/jor.1100090117
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
To help resolve longstanding uncertainties about kinematics of the shoulder, we studied three-dimensional glenohumeral joint motion during arm elevation. A magnetic tracking system was used to monitor the three-dimensional orientation of the humerus with respect to the scapula. Appropriate coordinate transformations were then performed for the calculation of glenohumeral joint rotation based on the defined Eulerian angle. The effects of the plane of elevation and the humeral rotation on the magnitude of arm elevation were documented. The maximum humeral elevation at the glenohumeral joint took place in a plane anterior to the scapular plane. Maximum elevation in all planes anterior to the scapular plane required external axial rotation of the humerus. Conversely, internal axial rotation was necessary for maximum elevation posterior to the scapular plane. Quantifying the obligatory axial rotation explains the relationship of internal and external rotation with maximum elevation.
引用
收藏
页码:143 / 149
页数:7
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