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Investigating the Effects of Knee Valgus Orthosis on Knee Joint Contact Forces Among Subjects With Knee Osteoarthritis: A Case Series Study Publisher



Karimi MT1 ; Bahramizadeh M2 ; Khaliliyan H3 ; Ansari M4 ; Batra K5, 6 ; Afolabi A7 ; Ilesanmi O8 ; Szarpak L9, 10 ; Khabbache H11 ; Nucera G12 ; Sitibondo A13 ; Ghaffari F14 ; Sharafatvaziri A15 ; Chirico F16
Authors
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Authors Affiliations
  1. 1. Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
  2. 2. Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
  3. 3. Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Rehabilitation Medicine, Erfan Hospital, Tehran, Iran
  5. 5. Department of Medical Education, Kirk Kerkorian School of Medicine at UNLV, University of Nevada, Las Vegas, United States
  6. 6. Office of Research, Kirk Kerkorian School of Medicine at UNLV, University of Nevada, Las Vegas, United States
  7. 7. Knowledge Management and Documentation Officer, Technical Services Directorate, MSI Nigeria Reproductive Choices, Abuja, Nigeria
  8. 8. Regional Programme Lead, West Africa Regional Collaborating Centre, Africa Centre for Disease Control and Prevention, Abuja, Nigeria
  9. 9. Department of Clinical Research and Development, LUXMED Group, Warsaw, Poland
  10. 10. Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX, United States
  11. 11. Laboratory of «Morocco: History, Theology and languages», Department of Psychology, Faculty of Arts and Human Sciences Fes-Saiss, Sidi Mohamed Ben Abdellah University, Fez, Morocco
  12. 12. Fatebenefratelli Hospital, Milano, Italy
  13. 13. Infectious Disease Unit, University Hospital of Messina, Messina, Italy
  14. 14. Kkhatam- Alanbia Hospital, Orthopedic Department, Tehran, Iran
  15. 15. Center for Orthopedic Trans-Disciplinary Applied Research, Tehran University of Medical Sciences, Tehran, Iran
  16. 16. Post-graduate School of Occupational Health, Universita Cattolica del Sacro Cuore, Roma, Italy

Source: Journal of Health and Social Sciences Published:2024


Abstract

Introduction: An increase in knee joint loading exacerbates the symptoms of knee joint osteoarthritis (OA). One of the conservative treatments used for subjects with knee OA is knee valgus orthosis, which is used to decrease the loads on knee joints. The aim of this study was to determine the effects of a new design of knee orthosis on joint contact force and muscle force in subjects with knee OA. Methods: Ten subjects with knee OA were recruited for this study. A motion analysis system with seven high-speed cameras and a Kistler force plate were used to record the motion of the subjects in walking and the forces applied on the leg. We used OpenSIM software to determine the knee joint contact force during walking, with and without the orthosis. Results: The knee orthosis decreased the peaks of the vertical component of knee joint contact forces (p < 0.05). Moreover, it did not influence walking speed. The use of the orthosis decreased the extension moment of the knee joint and the peaks of the forces produced by the muscles surrounding the knee joint. Discussion: The use of this orthosis decreased the knee joint contact forces. This suggests that the orthosis could be used to alleviate the symptoms of knee OA. Orthosis can be incorporated into the clinical management of subjects with knee OA by medical practitioners. Take-home message: The study demonstrated that the new design of knee orthosis effectively reduces the knee joint contact and muscle forces in subjects with knee osteoarthritis without affecting walking speed. These suggest that orthosis could be a valuable conservative treatment option to alleviate symptoms and manage knee osteoarthritis in clinical practice. © 2024 by the authors.
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