Computational Contact Pressure Prediction of CoCrMo, SS 316L and Ti6Al4V Femoral Head against UHMWPE Acetabular Cup under Gait Cycle

J Jamari; Muhammad Imam Ammarullah; Gatot Santoso; S Sugiharto; Toto Supriyono; Akbar Teguh Prakoso; Hasan Basri; Emile van der Heide

doi:10.3390/jfb13020064

Computational Contact Pressure Prediction of CoCrMo, SS 316L and Ti6Al4V Femoral Head against UHMWPE Acetabular Cup under Gait Cycle

J Funct Biomater. 2022 May 23;13(2):64. doi: 10.3390/jfb13020064.

Authors

J Jamari^{1

2}, Muhammad Imam Ammarullah^{2

3}, Gatot Santoso³, S Sugiharto³, Toto Supriyono³, Akbar Teguh Prakoso⁴, Hasan Basri⁴, Emile van der Heide⁵

Affiliations

¹ Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Semarang 50275, Central Java, Indonesia.
² Undip Biomechanics Engineering & Research Centre (UBM-ERC), Diponegoro University, Semarang 50275, Central Java, Indonesia.
³ Department of Mechanical Engineering, Faculty of Engineering, Pasundan University, Bandung 40264, West Java, Indonesia.
⁴ Department of Mechanical Engineering, Faculty of Engineering, Sriwijaya University, Indralaya 30662, South Sumatra, Indonesia.
⁵ Laboratory for Surface Technology and Tribology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.

Abstract

Due to various concerns about the use of metal-on-metal that is detrimental to users, the use of metal as acetabular cup material was later changed to ultra high molecular weight polyethylene (UHMWPE). However, the wear on UHMWPE releases polyethylene wear particles, which can trigger a negative body response and contribute to osteolysis. For reducing the wear of polyethylene, one of the efforts is to investigate the selection of metal materials. Cobalt chromium molybdenum (CoCrMo), stainless steel 316L (SS 316L), and titanium alloy (Ti6Al4V) are the frequently employed materials. The computational evaluation of contact pressure was carried out using a two-dimensional axisymmetric model for UHMWPE acetabular cup paired with metal femoral head under gait cycle in this study. The results show Ti6Al4V-on-UHMWPE is able to reduce cumulative contact pressure compared to SS 316L-on-UHMWPE and CoCrMo-on-UHMWPE. Compared to Ti6Al4V-on-UHMWPE at peak loading, the difference in cumulative contact pressure to respective maximum contact pressure is 9.740% for SS 316L-on-UHMWPE and 11.038% for CoCrMo-on-UHMWPE.

Keywords: CoCrMo; SS 316L; Ti6Al4V; UHMWPE; contact pressure; total hip arthroplasty.

Grants and funding

The research was funded by World Class Research UNDIP number 118-23/UN7.6.1/PP/2021 and DIPA of Public Service Agency of Sriwijaya University 2021, in accordance with the Rector’s Decree Number 0014/UN9/SK.LP2M.PT/2021, on 25 May 2021.