Direct Measurement of the Long-Term Effects of Non-Articulating AFOs on Lower Leg Strength in Drop-Foot Patients
Date of Award
Spring 5-9-2026
Document Type
Non Thesis
Degree Name
Master of Science in Orthotics and Prosthetics
Department
Kinesiology
Abstract
This study sought to find definitive proof of the long-term effects of non-articulating AFOs on strength deterioration of both dorsiflexors and plantarflexors when used by patients recently diagnosed with foot drop. Despite their prevalence, there remains much unknown regarding these potential detriments, which could have significant impacts on patient outcomes. Little research has been done regarding this topic, and none have measured muscle strength directly, only activation through the use of surface EMGs. In order to fill this gap in the existing research, this study utilized fixed dynamometers mounted to a testing platform to measure the differences prior to and during continued long-term use of solid AFOs over the course of a two-year period when worn by adults experiencing foot drop secondary to stroke or peroneal nerve injury. The strength of both dorsiflexors and plantar flexors was measured using the best of three measurements and averages of the same three attempts. Much care was taken to ensure both the accuracy and repeatability of these measurements, and the continued compliance of the test subjects. The application of the findings of this study will enable physicians and orthotists to make better informed decisions regarding the prescription and provision of AFOs to their patients.