Abstract

Purpose

To explore the effect of joint hypermobility on acuity, and precision, of hand proprioception.

Materials and methods

We compared proprioceptive acuity, and precision, between EDS patients and controls. We then measured any changes in their estimates of hand position after participants adapted their reaches in response to altered visual feedback of their hand. The Beighton Scale was used to quantify the magnitude of joint hypermobility.

Results

There were no differences between the groups in the accuracy of estimates of hand location, nor in the visually induced changes in hand location. However, EDS patients’ estimates were less precise when based purely on proprioception and could be partially predicted by Beighton score.

Conclusions

EDS patients are less precise at estimating their hand’s location when only afferent information is available, but the presence of efferent signalling may reduce this imprecision. Those who are more hypermobile are more likely to be imprecise.

中文翻译：

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在 Ehlers-Danlos 综合征中感知手的位置

摘要

目的

探讨关节过度活动对手本体感觉的敏锐度和精确度的影响。

材料和方法

我们比较了 EDS 患者和对照组之间的本体感觉敏锐度和精确度。然后，在参与者根据手部视觉反馈的变化调整他们的触手后，我们测量了他们对手部位置估计的任何变化。Beighton 量表用于量化关节过度活动的程度。

结果

两组之间在估计手部位置的准确性方面没有差异，在手部位置的视觉诱发变化方面也没有差异。然而，当纯粹基于本体感觉时，EDS 患者的估计不太准确，并且可以通过 Beighton 评分进行部分预测。

结论

当只有传入信息可用时，EDS 患者在估计他们的手的位置时不太精确，但传出信号的存在可能会减少这种不精确性。那些更灵活的人更有可能不精确。