Effectiveness of bilateral single-hinged knee bracing in osteoarthritis: A finite element study
| Autor: | Andi Haris, Vincent B. C. Tan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
musculoskeletal diseases
Knee Joint Finite Element Analysis 0206 medical engineering 02 engineering and technology Osteoarthritis Finite element study 03 medical and health sciences 0302 clinical medicine Humans Medicine von Mises yield criterion Gait Orthodontics 030222 orthopedics Braces business.industry Mechanical Engineering General Medicine Osteoarthritis Knee equipment and supplies musculoskeletal system medicine.disease 020601 biomedical engineering Finite element method Torsion spring Bracing Biomechanical Phenomena Knee braces business human activities |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. 235:873-882 |
| ISSN: | 2041-3033 0954-4119 |
| DOI: | 10.1177/09544119211012493 |
| Popis: | Effectiveness of knee braces remains to be identified. Therefore, the purpose of this study was to investigate the effectiveness of bilateral single-hinged knee bracing in knee osteoarthritis (OA) using finite element (FE) method. A three-dimensional FE model consisted of main model (knee-brace structure) and submodel (strap-muscle system) was developed. The submodel was used to convert the elastic strap-muscle interaction into an equivalent stiffness value required by the main model. Adding 100 N · mm/rad torsion spring to the brace with 5 kPa strap pressure lowered maximum von Mises stress in the knee OA components at a flexion angle greater than or equal to 90°. Separately, employing 10% brace pre-tension to the brace with 5 kPa strap pressure started to reduce stresses at a flexion angle of 70°. The configuration involving a combination of 10% brace pre-tension and 300 N · mm/rad torsion spring with 30 kPa strap tightness produced stress reduction over the entire range from 0° to 100° flexion angle. The basic bilateral single-hinged knee brace has shown to reduce stresses in the knee OA at high flexion angles only. Compared to the torsion spring, the brace pre-tension has shown to provide more significant benefits (i.e. stress reduction at lower flexion angles). The most sophisticated effects were achieved when the torsion spring was used in combination with the brace pre-tension. These two features can be potentially used for the development of an active knee brace if they can be modulated at different flexion angles or during the gait cycle. |
| Databáze: | OpenAIRE |
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