Prediction of Bone Damage Formation in Resurfacing Hip Arthroplasty
Nor Aiman Nor Izmin1, Mitsugu Todo2, Abdul Halim Abdullah3
1Aiman Izmin*, Faculty of Mechanical Engineering, University Teknologi MARA, Shah Alam, Selangor, Malaysia.
2M. Todo, Research Institute for Applied Mechanics, Kyushu University, Japan.
3A.H.Abdullah, Faculty of Mechanical Engineering, University Teknologi MARA, Shah Alam, Selangor, Malaysia.
Manuscript received on September 16, 2019. | Revised Manuscript received on October 20, 2019. | Manuscript published on October 30, 2019. | PP: 5879-5885 | Volume-9 Issue-1, October 2019 | Retrieval Number: A3021109119/2019©BEIESP | DOI: 10.35940/ijeat.A3021.109119
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Resurfacing Hip Arthroplasty (RHA) is a hip replacement method that is widely known nowadays. However, the complication on femoral bone fracture often happens in this hip replacement method which associated with the implant positioning. The objective of this study is to predict the damage formation on the bone which resulting from the RHA pin malposition. Finite element analysis was conducted in order to predict the damage formation on the bone model based on the computed tomography (CT) image of a patient. A 3D inhomogeneous bone model was developed from a 47 year old patient with an osteoarthritis disease located on the left femur. The material used for the RHA implant model is cobalt chromium and the implant is then being inserted into the femoral bone. Straight implant position with angle 130° was selected as a reference in the analysis while another three position of varus (> 130°) and valgus (<130°) were selected and known as the pin malposition. The simulation was conducted on each of the selected angles in order to predict the damage formation towards the bone model. The damage formation obtained was from the results of elements failure which occurred after applying the load. Physiological loading of a human which focusing on the normal walking condition was selected as the loading and boundary condition in this study. The femoral bone model experienced the highest damage formation when the implant located at the varus position while reduced significantly when the implant placed at the valgus position.
Keywords: Hip Osteoarthritis, Resurfacing Hip Arthroplasty, Implant Positioning, Bone Fracture, Damage Formation.