Publication Date

Fall 2024

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Biomedical Engineering

Advisor

Mojtaba Sharifi; Matthew Leineweber; Patrick Jurney

Keywords

above-knee-amputation;gait symmetry;prosthetic;vibrotactile

Abstract

People with unilateral transfemoral amputation (uTFA) experience higher rates of secondary injury, including arthritis, back pain, and osteoporosis, compared to either the general population or people with other lower limb amputation. Gait asymmetry may contribute to the higher incidence of each of these injuries. A biofeedback intervention targeting increased maximum hip extension on the affected side was implemented at two clinical sites to evaluate its efficacy compared to traditional physical therapy gait training. The intervention implements positive vibrotactile feedback by monitoring a participant’s gait and notifying them when they reach and exceed a target hip extension by providing vibrations at each wrist. The intervention was compared to a control intervention of verbal cuing targeting increased affected side hip-extension. Automated data analysis was implemented to process the raw kinetic, kinematic, and heart rate data collected during the trial. The analysis automatically cleans, filters, and segments the gait data before evaluating measures of deviation from normative gait, symmetry, and gait efficiency. The clinical trial is still in the enrollment phase, so no conclusion can yet be drawn on the efficacy of the biofeedback intervention or on its performance relative to the control.

Available for download on Wednesday, February 24, 2027

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