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

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)
2 Downloads (Pure)

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.

Original languageEnglish
Article number64
JournalJournal of Functional Biomaterials
Volume13
Issue number2
Early online date23 May 2022
DOIs
Publication statusPublished - Jun 2022

Keywords

  • CoCrMo
  • contact pressure
  • SS 316L
  • Ti6Al4V
  • total hip arthroplasty
  • UHMWPE

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