It is necessary to effectively assess functional mobility for appropriate prosthetic prescription and post-amputation rehabilitation. As part of this process, patients’ ability for variable cadence and community ambulation are assessed in-clinic, often through visual assessments and without objective standards. The purpose of this study was to explore the clinical viability of using wearable sensors to characterize the functional mobility of people with lower limb amputation. We collected inertial measurement unit (IMU) and global positioning system (GPS) data over two weeks, from 17 individuals with lower limb amputation and 14 healthy non-amputee controls. We calculated stride-by-stride cadence, walking speed and stride lengths, along with whether they occurred in or out of the home. Self-selected walking speed was also assessed in the lab. Compared to the lab, both groups walked slower and with a lower cadence during their daily lives. There were no differences in cadence variability between groups or between strides taken in and out of the home. Both groups walked faster and with greater stride lengths away from the homes. The results suggest that functional capacity measured in the lab was not necessarily reflected in routine walking during daily life. The walking measures derived in this approach can be used to aid in the prosthetic prescription process or in the assessment of different interventions.

中文翻译：

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可穿戴式传感器可量化下肢截肢患者日常生活中的活动能力

有效评估功能性活动性以进行适当的假体处方和截肢后康复是必要的。作为此过程的一部分，通常通过视觉评估且没有客观标准对患者的可变节奏和社区移动能力进行评估。这项研究的目的是探讨使用可穿戴式传感器表征下肢截肢患者功能活动性的临床可行性。我们在两周内收集了来自17位下肢截肢患者和14位健康的非截肢者对照的惯性测量单位（IMU）和全球定位系统（GPS）数据。我们计算了步幅，步速和步幅以及步幅，步幅和步幅，以及它们是否在家中出现。实验室还评估了自行选择的步行速度。与实验室相比，两组人在日常生活中的行走速度均较慢且步调较低。各组之间或进出家门之间的步调变化无差异。两组人走得更快，步幅更大。结果表明，在实验室中测得的功能能力不一定反映在日常生活中的日常行走中。通过这种方法得出的步行测量结果可用于辅助义肢处方过程或评估不同的干预措施。结果表明，在实验室中测得的功能能力不一定反映在日常生活中的日常行走中。通过这种方法得出的步行测量结果可用于辅助义肢处方过程或评估不同的干预措施。结果表明，在实验室中测得的功能能力不一定反映在日常生活中的日常行走中。通过这种方法得出的步行测量结果可用于辅助义肢处方过程或评估不同的干预措施。