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首页> 外文期刊>Human movement science >Comparison of range of motion and function of subjects with reverse anatomy Bayley-Walker shoulder replacement with those of normal subjects.
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Comparison of range of motion and function of subjects with reverse anatomy Bayley-Walker shoulder replacement with those of normal subjects.

机译：进行反向解剖Bayley-Walker肩置换术的受试者与正常受试者的运动范围和功能比较。

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摘要

Patients with rotator cuff tear and degenerative shoulder joint disease commonly experience severe pain and reduced performance during activities of daily living. A popular way to treat these patients is by means of reverse anatomy shoulder prosthesis. Studying the kinematics of subjects with reverse anatomy implant would be useful in order to gain knowledge about functionality of different designs. It is hypothesized that the kinematics of these subjects, in the absence of rotator cuff muscles, differs from that of normal subjects. In this study the upper limb kinematics of 12 subjects with a Bayley-Walker reverse anatomy shoulder prosthesis while performing tasks common in everyday activities and those that represent the range of motion was analyzed and compared to that of 12 normal subjects. Each patient also completed an Oxford Shoulder Score. Substantial reduction in the Bayley-Walker subjects' ranges of motion was observed compared to normal subjects. The mean abduction angle decreased from 109 degrees (+/-20) for normal subjects to 64 degrees (+/-25). A similar trend was observed during flexion and axial rotation tasks. Furthermore, the normal group showed less variable ranges of motion performing the standard tasks, whereas for the prosthetic group this varied greatly, which is likely to be dependent on muscle strength. Although the decreased range of motion was prominent, subjects were able to complete most of the tasks by compensating with their elbow and trunk. The most challenging task for Bayley-Walker subjects was lifting an object to head height.
机译：肩袖撕裂和肩关节退行性病变的患者通常会在日常生活中遭受严重的疼痛并降低表现。治疗这些患者的一种普遍方法是通过反向解剖肩关节假体。为了获得有关不同设计的功能的知识，研究具有反向解剖结构植入物的受试者的运动学将是有用的。假设在没有肩袖肌的情况下，这些受试者的运动学与正常受试者的运动学不同。在这项研究中，对12名使用Bayley-Walker反向解剖学肩假体的受试者进行上肢运动学，同时执行日常活动中常见的任务以及代表运动范围的任务，并与12名正常受试者进行了比较。每位患者还完成了牛津肩膀评分。与正常受试者相比，观察到Bayley-Walker受试者的运动范围大大减少。平均外展角从正常人的109度（+/- 20）降至64度（+/- 25）。在屈曲和轴向旋转任务中观察到类似的趋势。此外，正常组在执行标准任务时显示出较小的运动范围，而假肢组则变化很大，这很可能取决于肌肉的力量。尽管运动幅度的下降很明显，但是受试者可以通过补偿其肘部和躯干来完成大部分任务。对于Bayley-Walker受试者而言，最具挑战性的任务是将物体抬到头部的高度。

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