建议使用基于标记的运动捕捉技术追踪桡骨肢体差异患者的残肢

IF 2.3 4区 医学 Q3 ENGINEERING, BIOMEDICAL
N Pickard, D Howard, VH Nagaraja, L Kenney
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引用次数: 0

摘要

上肢假体使用者报告说,“套槽适合度”不理想,导致结果不佳。以前尝试测量关节窝-残肢耦合作为上肢关节窝配合的替代指标,但受到建模方法(6自由度模型)的限制,并且主要针对经肱骨假体使用者。Prince描述了一种6自由度模型,用于跟踪跨径向(TR)插座-肢体耦合,但这需要定制的测量设备,并且只在一个肢体完好的参与者身上进行了演示。目前国际生物力学学会(ISB)推荐的基于标记的前臂跟踪包括尺骨茎突标记,因此不适合有TR肢体差异的人。为了确定可选择的标记框架,10个完整肢体参与者做了6个不同的动作,每个动作9次。评估尺骨标记“云”标记的位移,用于18个替代跟踪帧,其中没有一个使用手腕标记。最佳框架是a)长残肢/完整前臂-肱骨上髁和尺骨中远端标记(典型尺骨的62.5 - 75%),b)短残肢-肱骨上髁和尺骨远端标记(典型尺骨的25 - 50%)。这些框架在点云位移度量上优于ISB框架。本研究为TR肢体差异患者的尺骨追踪提供了新的解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Recommendations for tracking the residual forearm in people with trans-radial limb difference using marker-based motion capture
Upper-limb prostheses users report unsatisfactory ‘socket fit’, leading to poor outcomes. Previous attempts to measure socket-residuum coupling as a proxy for upper-limb socket fit were limited by their modelling approach (<6-degrees of freedom (DoF) models) and focused on trans-humeral prosthesis users. Prince described a 6-DoF model to track trans-radial (TR) socket-limb coupling, but this required bespoke measurement equipment and was only demonstrated in one intact-limbed participant. Current International Society of Biomechanics (ISB) recommendations for marker-based forearm tracking include ulna styloid markers, therefore being unsuitable for people with TR limb difference. To identify alternative marker frames, ten intact limb participants performed six different movements, nine times each. Displacement of an ulna marker ‘cloud’ of markers was evaluated, for 18 alternative tracking frames, none of which utilised wrist markers. The optimal frames were a) for a long residuum/full forearm - markers on humeral epicondyles and mid-distal ulna bone (62.5–75 % of a typical ulna), and b) for a shorter residuum – markers on humeral epicondyles and distal ulna bone (25–50 % of a typical ulna). These frames compared favourably to the ISB frame in the point cloud displacement metric. This study provides novel solutions to tracking the ulna bone of people with TR limb difference.
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来源期刊
Medical Engineering & Physics
Medical Engineering & Physics 工程技术-工程:生物医学
CiteScore
4.30
自引率
4.50%
发文量
172
审稿时长
3.0 months
期刊介绍: Medical Engineering & Physics provides a forum for the publication of the latest developments in biomedical engineering, and reflects the essential multidisciplinary nature of the subject. The journal publishes in-depth critical reviews, scientific papers and technical notes. Our focus encompasses the application of the basic principles of physics and engineering to the development of medical devices and technology, with the ultimate aim of producing improvements in the quality of health care.Topics covered include biomechanics, biomaterials, mechanobiology, rehabilitation engineering, biomedical signal processing and medical device development. Medical Engineering & Physics aims to keep both engineers and clinicians abreast of the latest applications of technology to health care.
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