Evaluation of an instrument-assisted dynamic prosthetic alignment technique for individuals with transtibial amputation
Evaluation of an instrument-assisted dynamic prosthetic alignment technique for individuals with transtibial amputation
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DOI：
10.1177/0309364615574161
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发表时间：
2016-08-01
影响因子：
1.5
通讯作者：
Andrysek, Jan
中科院分区：
文献类型：
--
作者：
Chen, Caroline Wen Jia;Heim, Winfried;Andrysek, Jan
背景：假体排列不佳会对截肢者的康复和健康产生不利影响。迄今为止，很少有研究评估仪器辅助对准技术在临床实践中的有效性和实用性。目的：比较仪器辅助动态对准技术（Compas）与传统方法。研究设计：在交叉研究设计中，为9例单侧胫骨截肢患者提供动态假体矫直，以比较传统和器械辅助矫直技术。方法：仪器辅助技术涉及市售的力和扭矩传感动态校准系统（Compas）。评估节奏、骨盆加速度和窝力矩。使用自定义问卷来收集用户的看法。结果：在包括节奏和骨盆加速度在内的全球步态测量中，没有发现校准技术之间的差异。通过检查关节窝和足部之间的角度变化，没有发现明显的对齐差异；然而，使用仪器辅助技术，发现明显更高的窝下力矩。问卷调查显示，6名截肢者没有偏好，3名截肢者偏好传统对齐方式。结论：Compas的使用似乎产生了与传统技术相似的对准结果，尽管在牙槽处的力矩略高。本研究提供了器械辅助假体对准技术在胫骨截肢患者临床应用方面的新信息。
Background: A prosthesis that is not optimally aligned can adversely influence the rehabilitation and health of the amputee. Very few studies to date evaluate the effectiveness and utility of instrument-assisted alignment techniques in clinical practice.Objectives: To compare an instrument-assisted dynamic alignment technique (Compas) to conventional methods.Study design: In a crossover study design, dynamic prosthetic alignments were provided to nine individuals with unilateral transtibial amputations to compare conventional and instrument-assisted alignment techniques.Methods: The instrument-assisted technique involved a commercially available force and torque sensing dynamic alignment system (Compas). Cadence, pelvic accelerations, and socket moments were assessed. A custom questionnaire was used to gather user perceptions.Results: No differences between alignment techniques were found in global gait measures including cadence and pelvic accelerations. No significant alignment differences were achieved by examination of angular changes between the socket and foot; however, significantly higher below-the-socket moments were found with the instrument-assisted technique. From the questionnaire, six amputees had no preference, while three preferred the conventional alignment.Conclusion: The use of Compas appears to produce similar alignment results as conventional techniques, although with slightly higher moments at the socket.Clinical relevance This study provides new information about the clinical utilization of instrument-assisted prosthetic alignment techniques for individuals with transtibial amputation.