Competitive life time assessment of SrO-ZTA/SrO-ZTA and CoCrMo/UHMWPE hip prosthesis bearings

0546057 - FZÚ 2022 RIV SG eng J - Journal Article
Basra, S.A. - Sarkar, Debasish
Competitive life time assessment of SrO-ZTA/SrO-ZTA and CoCrMo/UHMWPE hip prosthesis bearings.
Journal of Mechanics in Medicine and Biology. Roč. 20, č. 3 (2020), č. článku 2050009. ISSN 0219-5194. E-ISSN 1793-6810
Institutional support: RVO:68378271
Keywords : transient dynamic analysis * Von Mises stress * wear depth * wear volume
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 0.897, year: 2020
Method of publishing: Limited access
https://doi.org/10.1142/S0219519420500098

Hip joint failure leads to the replacement of the hip joint prosthesis.This work focuses on the proper selection of bearing couple materials for the hip joint to improve the performance and life.The stress and deformation of different bearing couple materials are analysed in the perspective of transient dynamic analysis under jogging load cycle.Selective hip joint bearing (femoral head-liner) couples are SS316L on UHMWPE (MoP), CoCrMo on UHMWPE(MoP),Ti6Al4V on SrO-ZTA(MoC),SrO-ZTA on UHMWPE(CoP) and SrO-ZTA on SrO-ZTA(CoC) encountered, respectively.The SrO-ZTA on SrO-ZTA(CoC) bearing couple generates the less Von Mises stress of 180.88 MPa.Load bearing pressure and Archard law predict the wear depth of CoCrMo on UHMWPE(MoP) and SrO-ZTA on SrO-ZTA(CoC) bearing couples are 0.141 mm/year and 0.031 mm/year,respectively.In simultaneous,the theoretical wear volume for CoCrMo on UHMWPE(MoP) and SrO-ZTA on SrO-ZTA(CoC) bearing couples are found as 35.46mm3/year and 2.62mm3/year,respectively.
Permanent Link: http://hdl.handle.net/11104/0322656