Article

Bench research-biomechanical study. INTRODUCTION: Static
progressive orthotic devices are efficient in treating contractures. However,
current outriggers are unable to keep force transmission and the force application angle (FAA) constant. PURPOSE OF THE STUDY: To evaluate the
biomechanical performance of the Isoforce outrigger, a novel extension orthosis.
METHODS: A hand model was used to measure the required force at the outrigger and
FAA, while simulating resolution of different contracture angles. We also tested
feasibility in a small patient series. RESULTS: The force required with the
Isoforce device never exceeded 2.4 N, and the FAA did not change more than 6
degrees . Corresponding figures for the reference devices exceeded 16 N and 20
degrees . The 7 patients testing the Isoforce extension device showed an
extension deficit that decreased from 40 degrees at baseline to 25 degrees at 6
weeks. They rated the device as very comfortable to wear. CONCLUSIONS: Isoforce
maintains constant force transmission and FAA throughout the full range of
motion, promotes the lengthening of contracted structures, and is comfortable to
wear. LEVEL OF EVIDENCE:
Not applicable.
CI - Copyright A(c) 2016 Hanley & Belfus. Published by Elsevier Inc. All rights reserved.

Langue : ANGLAIS