PMID: 9165399Jun 1, 1997Paper

The role of backside polishing, cup angle, and polyethylene thickness on the contact stresses in metal-backed acetabular components

Journal of Biomechanics
S M KurtzD L Bartel

Abstract

Mechanical interactions between the polyethylene liner and the metal-backing play an important role in the load transfer and debris-generation mechanisms of an acetabular component. Insert thickness, cup orientation, and insert-shell interface conditions affect the resulting contact stresses at the articulating and backside surfaces of the polyethylene component. The objective of this study was to determine the variation in contact stresses on a hemispherical acetabular component as a function of the friction coefficient of the line-shell interface, the thickness of the insert, and the load application angle. Three-dimensional finite element models of a metal-backed acetabular component with liner thicknesses of 3-12 mm were developed. The insert-shell interface was modeled as either matte or highly polished, and the load angle of the joint reaction force was changed from 36 to 63 degrees with respect to the dome. We found that the contact stresses at the articulating and backside surfaces of the insert were relatively insensitive to changes in the coefficient of friction at the insert-shell interface (resulting in approximately 1-10% variation in contact stress), when compared to the effect of changing the insert's thickness (...Continue Reading

References

Sep 11, 1991·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·G M KotzarA H Burstein
Jan 1, 1988·The Journal of Arthroplasty·M G CohenR V Worrell
Aug 1, 1985·Journal of Biomechanical Engineering·D L BartelD L Edwards

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Citations

Aug 5, 2011·Archives of Orthopaedic and Trauma Surgery·Ichiro NakaharaNobuhiko Sugano
Jul 24, 2015·Clinical Orthopaedics and Related Research·Kamal BaliMatthew G Teeter
Dec 30, 1999·The Journal of Arthroplasty·T AkisueA H Wilde
Mar 8, 2006·The Journal of Arthroplasty·Geoffrey HorneDavid J N Dalton
Jun 3, 2009·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Kevin L OngSteven M Kurtz
Jul 31, 1999·The Journal of Arthroplasty·M YamaguchiY Hashimoto
Jun 26, 2014·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Xijin HuaJohn Fisher
Sep 6, 2018·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Danny VogelRainer Bader
Sep 18, 2010·Clinical Orthopaedics and Related Research·Fu-Wen ShenHarry A McKellop
Oct 26, 2016·Hip & Pelvis·Myung-Rae ChoJae Jung Kim
Apr 17, 2016·Clinical Orthopaedics and Related Research·Tong LiuTimothy M Wright
Dec 8, 2000·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Z M Jin
Jan 17, 2002·The Journal of Bone and Joint Surgery. American Volume·Anthony M YoungCharles A Engh
Dec 16, 2010·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Rebecca J KampaJohn W Rosson
Jan 15, 2005·Journal of Biomechanical Engineering·M C MillerK Galik
May 18, 2007·Journal of Orthopaedic Surgery and Research·Francisco RomeroMark H Gonzalez
Sep 30, 2010·The Journal of Arthroplasty·Abtin AkbariDaniel J Schnettgoecke

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