OpenSim as a preliminary kinematic testing platform for the development of total knee arthroplasty implants
| Autor: | Hao Yang Chan, Peter S. Walker |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Computer science
0206 medical engineering Total knee replacement Biomedical Engineering Biophysics Total knee arthroplasty 02 engineering and technology Kinematics Prosthesis Design computer.software_genre Condyle 03 medical and health sciences 0302 clinical medicine Humans Torque Computer Simulation Orthopedics and Sports Medicine Femur Range of Motion Articular Arthroplasty Replacement Knee Simulation Tibia Rehabilitation Design tool 020601 biomedical engineering Biomechanical Phenomena Simulation software Implant Knee Prosthesis computer Software 030217 neurology & neurosurgery |
| Zdroj: | Journal of Biomechanics. 76:53-60 |
| ISSN: | 0021-9290 |
| DOI: | 10.1016/j.jbiomech.2018.05.014 |
| Popis: | The design of a total knee replacement implant needs to take account the complex surfaces of the knee which it is replacing. Ensuring design performance of the implant requires in vitro testing of the implant. A considerable amount of time is required to produce components and evaluate them inside an experimental setting. Numerous adjustments in the design of an implant and testing each individual design can be time consuming and expensive. Our solution is to use the OpenSim simulation software to rapidly test multiple design configurations of implants. This study modeled a testing rig which characterized the motion and laxity of knee implants. Three different knee implant designs were used to test and validate the accuracy of the simulation: symmetrical, asymmetric, and anatomic. Kinematics were described as distances measured from the center of each femoral condyle to a plane intersecting the most posterior points of the tibial condyles between 0 and 135° of flexion with 15° increments. Excluding the initial flexion measurement (∼0°) results, the absolute differences between all experimental and simulation results (neutral path, anterior-posterior shear, internal-external torque) for the symmetric, asymmetric, and anatomical designs were 1.98 mm ± 1.15, 1.17 mm ± 0.89, and 1.24 mm ± 0.97, respectively. Considering all designs, the accuracy of the simulation across all tests was 1.46 mm ± 1.07. It was concluded that the results of the simulation were an acceptable representation of the testing rig and hence applicable as a design tool for new total knees. |
| Databáze: | OpenAIRE |
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