Computational Analysis on Bone Adaptation in Resurfacing Hip Arthroplasty with Valgus-Varus Placement

Nor Aiman Nor Izmin, Fatin Hazwani, Mitsugu Todo, Abdul Halim Abdullah

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Resurfacing Hip Arthroplasty (RHA) is one of the solutions for young adults with hip osteoarthritis disease (OA). Despite the positive outcomes that were achieved after RHA, the method also has its risks and complications. Early bone failure might occur as consequences from the insertion of improper implant placement. In this study, an inhomogeneous material model of femoral bone was developed from CT-based images and reconstructed to represent resurfacing hip arthroplasty. Different placement of implant was assigned to investigate the effects of the placement to the bone adaptation. Comparison of the Drucker-Prager equivalent stress between the femur bone models with the presence of implant in varus and valgus was analyzed, hence to understand the possibility of bone failures after arthroplasty. A RHA implant was assigned with material properties of cobalt-chromium. The finite element study was simulating the condition of normal walking, with the loading magnitude applied was based on the patient’s body weight. The RHA implant placement is found to have a notable influence to the bone conditions especially on the varus +18° placement with stress increment up to 36.31% in the lateral region of the femur, also 31.61 and 19.34% in the medial region of the femur. Thus, the femoral bone models implanted in varus placement shows a higher possibility of bone failures in all conditions.

Original languageEnglish
Title of host publicationRecent Trends in Manufacturing and Materials Towards Industry 4.0 - Selected Articles from iM3F 2020, Malaysia
EditorsMuhammed Nafis Osman Zahid, Amiril Sahab Abdul Sani, Mohamad Rusydi Mohamad Yasin, Zulhelmi Ismail, Nurul Akmal Che Lah, Faiz Mohd Turan
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages11
ISBN (Print)9789811595042
Publication statusPublished - 2021
EventInnovative Manufacturing, Mechatronics and Materials Forum, iM3F 2020 - Pekan, Malaysia
Duration: Aug 6 2020Aug 6 2020

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364


ConferenceInnovative Manufacturing, Mechatronics and Materials Forum, iM3F 2020

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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