Contribution of the reverse endoprosthesis to glenohumeral kinematics
Contribution of the reverse endoprosthesis to glenohumeral kinematics
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DOI：
10.1007/s11999-007-0091-5
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发表时间：
2008-03-01
影响因子：
4.2
通讯作者：
Willems, W. J.
中科院分区：
文献类型：
--
作者：
Bergmann, Jeroen H. M.;de Leeuw, M.;Willems, W. J.
在放置反向肩关节内假体后，活动范围通常仍然受到影响。然而，这种情况在多大程度上是由于反向内假体的运动受限造成的尚不清楚。我们测量了16例患者（18肩）的运动模式，在三个主动和被动的运动范围的任务，使用六度的自由电磁跟踪设备。尽管肩袖缺陷，盂肱抬高约占总胸肱抬高的三分之二，这与健康受试者相当。然而，患者不能主动使用假体提供的全范围活动。虽然我们发现肩关节运动学存在相当大的个体差异，但盂肱关节活动范围的限制似乎与缺乏产生的肌肉力量有关，而不是假体的设计。
After placement of a reverse shoulder endoprosthesis, range of motion is usually still compromised. To what extent this occurs from limitation in motion of the reverse endoprosthesis is, however, unclear. We measured the motion pattern of 16 patients (18 shoulders) during three active and passive range of motion tasks using a six degree-of-freedom electromagnetic tracking device. Despite rotator cuff deficiencies, glenohumeral elevation contributed roughly two-thirds of the total thoracohumeral elevation, which is comparable to healthy subjects. However, patients could not actively use the full range of motion provided by the prosthesis. Although we found considerable interindividual differences in shoulder kinematics, the limitation in glenohumeral range of motion appears related to a lack of generated muscle force and not the design of the prosthesis.