Amani A Alkayyali, Conrad P.F. Cowan, Callum J Owen, Emmanuel Giannas, Susann Wolfram, Ulrich Hansen, Alanson P Sample, Roger J.H. Emery, Max Shtein, David B Lipps
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引用次数: 0
Abstract
Internal and external rotation of the shoulder is often challenging to quantify in the clinic. The current study evaluates a novel, engineered, wearable sensor system for improved internal and external shoulder rotation monitoring, and applies it in healthy individuals. Using the design principles of the Japanese art of kirigami (folding and cutting of paper to design 3D shapes), the sensor platform conforms to the shape of the shoulder with on-board strain gauges to measure movement. Our objective was to examine how well this kirigami-inspired shoulder patch could identify differences in shoulder kinematics between internal and external rotation as healthy individuals moved their humerus through specified movement patterns. Seventeen participants donned the wearable sensor on their right shoulder. Four strain gauges measured skin deformation patterns while participants moved their arm into internal or external rotation based on Codman's paradox. One-dimensional statistical parametric mapping explored differences in strain voltage change of the strain gauges between internally-directed and externally-directed movements. The kirigami shoulder sensor, with its four on-board strain gauges, detected distinct differences in the movement pattern of participants who performed prescribed movements that resulted in either internal or external shoulder rotation. Three of the four strain gauges detected significant temporal differences between internal and external rotation (all p <0.047), particularly for the strain gauges placed distal or posterior to the acromion. These results are clinically significant, as they suggest a new class of wearable sensors conforming to the shoulder can measure differences in skin surface deformation corresponding to the underlying humerus rotation.
在临床上,肩部的内外旋转往往难以量化。目前的研究评估了一种新型工程可穿戴传感器系统,用于改进肩关节内外旋转监测,并将其应用于健康人。传感器平台采用日本桐纸艺术(折纸和剪纸设计三维形状)的设计原理,与肩部形状相吻合,并配有测量运动的板载应变片。我们的目标是研究这种受气褶纸启发设计的肩部贴片在健康人通过特定运动模式移动肱骨时,能够识别内旋和外旋之间的肩部运动学差异。17 名参与者在右肩佩戴了可穿戴传感器。当参与者根据科德曼悖论移动手臂进行内旋或外旋时,四个应变片测量了皮肤的变形模式。一维统计参数映射探索了应变片在内旋转和外旋转运动之间应变电压变化的差异。kirigami 肩部传感器带有四个板载应变片,可检测到参与者在进行规定动作时,肩部内旋或外旋的运动模式存在明显差异。四个应变片中的三个检测到内旋和外旋之间存在显著的时间差异(均为 p <0.047),尤其是放置在肩峰远端或后方的应变片。这些结果具有重要的临床意义,因为它们表明,与肩部贴合的新型可穿戴传感器可以测量与潜在肱骨旋转相对应的皮肤表面变形差异。