A Numerical Study of Effects of the Manufacture Perturbations to Contacts of the Total Hip Replacement

0363664 - ÚT 2012 RIV CZ eng J - Journal Article
Koukal, M. - Fuis, Vladimír - Florian, Z. - Janíček, P.
A Numerical Study of Effects of the Manufacture Perturbations to Contacts of the Total Hip Replacement.
Engineering Mechanics. Roč. 18, č. 1 (2011), s. 33-42. ISSN 1802-1484
Institutional research plan: CEZ:AV0Z20760514
Keywords : total hip replacement * FEM * roundness * contact pressure * frictional moment
Subject RIV: BO - Biophysics

In the endoprosthesis surgery there is a large percentage of implant defects, which cause the failure of the whole prosthesis. One kind of the total hip replacement functionality loss is acetabular cup pull-off from pelvis bone. This article is aimed at manufacture perturbations analysis as one of the possible reasons to this kind of failure. Dimension and of geometry (roundness) manufacturing perturbations were analyzed. It was found, that these perturbations affect considered values of contact pressure and frictional moment. Contact pressure and frictional moment are quantities affecting replacement success and durability.
Permanent Link: http://hdl.handle.net/11104/0199390