Design and optimization of a hip disarticulation prosthesis using the remote center of motion mechanism.
Background: Hip disarticulation prostheses (HDPs) are not routinely seen in clinical practice, and traditional hip prostheses rotate around an axis at the front side of the pelvic socket.Objective: This study proposes a mechanism to restore the rotation center to the acetabulum of the amputated side...
| Publicado en: | Technology & Health Care Vol. 29; no. 2; pp. 269 - 282 |
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| Autores principales: | , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Sage Publications Inc.
2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| Sumario: | Background: Hip disarticulation prostheses (HDPs) are not routinely seen in clinical practice, and traditional hip prostheses rotate around an axis at the front side of the pelvic socket.Objective: This study proposes a mechanism to restore the rotation center to the acetabulum of the amputated side and uses comparative experiments with traditional HDP to verify the validity of the novel design.Methods: A double parallelogram design of HDP based on a remote center of motion (RCM) mechanism was presented in this paper. Optimization was achieved by a genetic algorithm with the maximal integral size and minimal driving force of the mechanism.Results: The prototype was developed by final optimal results and tested by a hip disarticulated amputee. Testing results revealed that the RCM-HDP improved the range of motion of the hip prosthesis by 78%. The maximal flexion of the assorted prosthetic knee was closer to the sound side than a traditional HDP by 15%.Conclusion: The proposed RCM-HDP promoted the kinematic performance and symmetry of the hip prosthesis compared to the traditional design. |
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