Kahle Jason T, Klenow Tyler D, Highsmith M Jason
OP Solutions, Tampa, FL, USA; Prosthetic Design + Research, Tampa, FL, USA.
Prosthetics and Sensory Aids Service, James A. Haley Veterans' Hospital, Tampa, FL, USA.
Technol Innov. 2016 Sep;18(2-3):175-183. doi: 10.21300/18.2-3.2016.175.
The socket-limb interface is vital for functionality and provides stability and mobility for the amputee. Volume fluctuation can lead to compromised fit and function. Current socket technology does not accommodate for volume fluctuation. An adjustable interface may improve function and comfort by filling this technology gap. The purpose of this study was to compare the effectiveness of the standard of care (SOC) ischial ramus containment to an adjustable transfemoral prosthetic interface socket in the accommodation of volume fluctuation. A prospective experimental case study using repeated measures of subjective and performance outcome measures between socket conditions was employed. In the baseline volume condition, the adjustable socket improved subjective and performance measures 19% to 37% over SOC, whereas the two-minute walk test demonstrated equivalence. In the volume loss condition, the adjustable socket improved all subjective and performance measures 22% to 93%. All aggregated data improved 16% to 50% compared with the SOC. In simulated volume gain, the SOC socket failed, while the subject was able to complete the protocol using the adjustable socket. In this case study, the SOC socket was inferior to the comparative adjustable transfemoral amputation interface in subjective and performance outcomes. There is a lack of clinical trials and evidence comparing socket functional outcomes related to volume fluctuation.
接受腔与肢体的接口对于功能实现至关重要，为截肢者提供稳定性和活动能力。体积波动会导致适配性和功能受损。当前的接受腔技术无法适应体积波动。一种可调节接口或许能通过填补这一技术空白来改善功能和舒适度。本研究的目的是比较标准护理（SOC）坐骨支包容式接受腔与可调节经股骨假肢接口接受腔在适应体积波动方面的有效性。采用了一项前瞻性实验性案例研究，对不同接受腔条件下的主观和性能结果测量进行重复测量。在基线体积条件下，与SOC相比，可调节接受腔在主观和性能测量方面提高了19%至37%，而两分钟步行测试显示二者相当。在体积减少条件下，可调节接受腔在所有主观和性能测量方面提高了22%至93%。与SOC相比，所有汇总数据提高了16%至50%。在模拟体积增加时，SOC接受腔失效，而受试者能够使用可调节接受腔完成实验方案。在本案例研究中，SOC接受腔在主观和性能结果方面不如对比的可调节经股骨截肢接口。目前缺乏比较与体积波动相关的接受腔功能结果的临床试验和证据。
