IMU-based gait analysis in lower limb prosthesis users: Comparison of step demarcation algorithms.

ABSTRACT:

Background

Inertial Measurement Unit (IMU)-based gait analysis algorithms have previously been validated in healthy controls. However, little is known about the efficacy, performance, and applicability of these algorithms in clinical populations with gait deviations such as lower limb prosthesis users (LLPUs).

Research question

To compare the performance of 3 different IMU-based algorithms to demarcate steps from LLPUs.

Methods

We used a single IMU sensor affixed to the midline lumbopelvic region of 17 transtibial (TTA), 16 transfemoral (TFA) LLPUs, and 14 healthy controls (HC). We collected acceleration and angular velocity data during overground walking trials. Step demarcation was evaluated based on fore-aft acceleration, detecting either: (i) maximum acceleration

SUBMITTER: Bastas G 

PROVIDER: S-EPMC6062463 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature