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首页> 美国卫生研究院文献>Scientific Reports >Upper limb activity in myoelectric prosthesis users is biased towards the intact limb and appears unrelated to goal-directed task performance
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Upper limb activity in myoelectric prosthesis users is biased towards the intact limb and appears unrelated to goal-directed task performance

机译：肌电假体使用者的上肢活动偏向完整肢体并且与目标导向的任务表现无关

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Studies of the effectiveness of prosthetic hands involve assessing user performance on functional tasks, typically collected in the lab, sometimes combined with self-report of real-world use. In this paper we compare real-world upper limb activity between a group of 20 myoelectric prosthesis users and 20 anatomically intact adults. Activity was measured from wrist-worn accelerometers over a 7-day period. The temporal patterns in upper limb activity are presented and the balance of activity between the two limbs quantified. We also evaluated the prosthesis users’ performance on a goal-directed task, characterised using measures including task success rate, completion time, gaze behaviour patterns, and kinematics (e.g. variability and patterns in hand aperture). Prosthesis users were heavily reliant on their intact limb during everyday life, in contrast to anatomically intact adults who demonstrated similar reliance on both upper limbs. There was no significant correlation between the amount of time a prosthesis was worn and reliance on the intact limb, and there was no significant correlation between either of these measures and any of the assessed kinematic and gaze-related measures of performance. We found participants who had been prescribed a prosthesis for longer to demonstrate more symmetry in their overall upper limb activity, although this was not reflected in the symmetry of unilateral limb use. With the exception of previously published case studies, this is the first report of real world upper limb activity in myoelectric prosthesis users and confirms the widely held belief that users are heavily reliant on their intact limb.
机译：假手有效性的研究涉及评估用户在功能任务上的表现，这些任务通常是在实验室中收集的，有时还结合了真实使用情况的自我报告。在本文中，我们比较了20个肌电假体使用者和20个解剖完整的成年人之间的实际上肢活动。通过手腕上的加速度计在7天内测量活动。呈现了上肢活动的时间模式，并量化了两肢之间的活动平衡。我们还评估了假肢使用者在目标导向任务上的性能，并使用包括任务成功率，完成时间，注视行为模式和运动学（例如手部光圈的可变性和模式）在内的指标进行了表征。假肢使用者在日常生活中严重依赖完整肢体，而解剖学上完整的成年人则表现出对两个上肢的相似依赖。假体的佩戴时间与对完好肢体的依赖之间没有显着相关性，并且这些措施中的任何一项与评估的运动学和与凝视相关的任何行为之间均无显着相关性。我们发现被规定使用假肢的参与者在整个上肢活动中表现出更多的对称性，尽管这并未反映在单侧肢体使用的对称性中。除先前发表的案例研究外，这是肌电假体使用者真实世界上肢活动的第一份报告，证实了人们普遍认为使用者严重依赖其完整肢体的观点。

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