Elham Esfandiari1, Mojtaba Kamyab1, Hamid Reza Yazdi2, Nasim Foroughi3, Mohammad Ali Sanjari4. 1. Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Iran University of Medical sciences, Tehran, Iran. 2. Department of Orthopedic Surgery, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. 3. Clinical and Rehabilitation Sciences, School of Physiotherapy, University of Sydney, Sydney, North South Wales, Australia. 4. Rehabilitation Research Center, Department of Rehabilitation Basic Sciences, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.
Abstract
BACKGROUND: Orthotic interventions for knee osteoarthritis (OA) aim to reduce mechanical loading on the medial compartment of the knee and may lessen the lateral trunk lean as the most important compensatory gait strategy. The lateral wedge insole is a known orthotic intervention for knee OA. However, the question whether the addition of a subtalar strap to the wedge improves its effect has not been addressed in the literature. OBJECTIVE: To compare the effects of lateral wedge insoles, with and without a subtalar strap, on the lateral trunk lean in patients with knee OA. METHODS: Twenty-three patients aged over 40 years, with grade I or II OA of the medial compartment of one knee, based on the American College of Rheumatology criteria, were included in this study. The patients were diagnosed with OA based on a clinical examination, and the diagnosis was confirmed with radiographs. A 3-dimensional motion measurement system was used to collect the gait data for 3 different conditions: (1) with no insole, (2) with a lateral wedge insole, and (3) with a lateral wedge insole and a subtalar strap. The immediate effect of the 3 test conditions on the lateral trunk lean was compared during a gait cycle a stance phase and at the point of midstance. RESULTS: Based on the laboratory coordinate system, the 3 conditions had no significant effect on the lateral trunk lean during a gait cycle and a stance phase and at the point of midstance in patients with knee OA. CONCLUSION: The results of this study demonstrated that the lateral wedge insoles, with and without a subtalar strap, had no immediate effect on the lateral trunk lean in patients with knee OA. However, the long-term effect of lateral wedge insoles on the lateral trunk lean in these patients requires further investigation.
BACKGROUND: Orthotic interventions for knee osteoarthritis (OA) aim to reduce mechanical loading on the medial compartment of the knee and may lessen the lateral trunk lean as the most important compensatory gait strategy. The lateral wedge insole is a known orthotic intervention for knee OA. However, the question whether the addition of a subtalar strap to the wedge improves its effect has not been addressed in the literature. OBJECTIVE: To compare the effects of lateral wedge insoles, with and without a subtalar strap, on the lateral trunk lean in patients with knee OA. METHODS: Twenty-three patients aged over 40 years, with grade I or II OA of the medial compartment of one knee, based on the American College of Rheumatology criteria, were included in this study. The patients were diagnosed with OA based on a clinical examination, and the diagnosis was confirmed with radiographs. A 3-dimensional motion measurement system was used to collect the gait data for 3 different conditions: (1) with no insole, (2) with a lateral wedge insole, and (3) with a lateral wedge insole and a subtalar strap. The immediate effect of the 3 test conditions on the lateral trunk lean was compared during a gait cycle a stance phase and at the point of midstance. RESULTS: Based on the laboratory coordinate system, the 3 conditions had no significant effect on the lateral trunk lean during a gait cycle and a stance phase and at the point of midstance in patients with knee OA. CONCLUSION: The results of this study demonstrated that the lateral wedge insoles, with and without a subtalar strap, had no immediate effect on the lateral trunk lean in patients with knee OA. However, the long-term effect of lateral wedge insoles on the lateral trunk lean in these patients requires further investigation.
Authors: Y Kuroyanagi; T Nagura; H Matsumoto; T Otani; Y Suda; T Nakamura; Y Toyama Journal: Osteoarthritis Cartilage Date: 2007-03-27 Impact factor: 6.576
Authors: M A Hunt; T B Birmingham; D Bryant; I Jones; J R Giffin; T R Jenkyn; A A Vandervoort Journal: Osteoarthritis Cartilage Date: 2008-02-21 Impact factor: 6.576
Authors: W Zhang; R W Moskowitz; G Nuki; S Abramson; R D Altman; N Arden; S Bierma-Zeinstra; K D Brandt; P Croft; M Doherty; M Dougados; M Hochberg; D J Hunter; K Kwoh; L S Lohmander; P Tugwell Journal: Osteoarthritis Cartilage Date: 2008-02 Impact factor: 6.576