Numerical analysis of the biomechanical complications accompanying the total hip replacement with NANOS-Prosthetic

Bone remodelling and prosthesis migration

authored by: B. A. Behrens, A. Bouguecha, M. Lerch, S. Betancur, C. Stukenborg-Colsman, I. Nolte, K. Lucas, A. Almohallami
Abstract: Aseptic loosening of the prosthesis is still a problem in artificial joint implants. The ýloosening can be caused by the resorption of the bone surrounding ýthe prosthesis according to stress shielding. A numerical model was developed and validated by means of DEXA-studies in order to ýanalyse the bone remodelling process in the periprosthetic bone. A total loss of about 3.7% of the bone density in the periprosthetic Femur with NANOS is computed. The bone remodelling calculation was validated by means of a DEXA-study with a 3-years-follow-up. The model was further developed in order to be able to calculate and consider the migration of the implants. This method was applied on the ýNANOS-implant with a computed total migration of about 0.43 mm. These calculations showed good results in comparison with a 2-year-follow-up clinical study, whereby a RSA-method was used to determine the stem migration in the bone. In order to ýstudy the mutual influence between the implant migration and the hip contact forces ý, a software is developed by our scientific group to couple a multi body simulation (MBS) of human lower limps with the FEA of the periprosthetic Femur.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Article
Journal: Current Directions in Biomedical Engineering
Volume: 1
Pages: 381-385
No. of pages: 5
Publication date: 01.09.2015
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Biomedical Engineering
Electronic version(s): https://doi.org/10.1515/cdbme-2015-0093 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{2b54bd8e2b17489f8567f8cdff3efca6,
title = "Numerical analysis of the biomechanical complications accompanying the total hip replacement with NANOS-Prosthetic: Bone remodelling and prosthesis migration",
abstract = "Aseptic loosening of the prosthesis is still a problem in artificial joint implants. The {\'y}loosening can be caused by the resorption of the bone surrounding {\'y}the prosthesis according to stress shielding. A numerical model was developed and validated by means of DEXA-studies in order to {\'y}analyse the bone remodelling process in the periprosthetic bone. A total loss of about 3.7% of the bone density in the periprosthetic Femur with NANOS is computed. The bone remodelling calculation was validated by means of a DEXA-study with a 3-years-follow-up. The model was further developed in order to be able to calculate and consider the migration of the implants. This method was applied on the {\'y}NANOS-implant with a computed total migration of about 0.43 mm. These calculations showed good results in comparison with a 2-year-follow-up clinical study, whereby a RSA-method was used to determine the stem migration in the bone. In order to {\'y}study the mutual influence between the implant migration and the hip contact forces {\'y}, a software is developed by our scientific group to couple a multi body simulation (MBS) of human lower limps with the FEA of the periprosthetic Femur. ",
keywords = "bone remodelling, finite element, multi body human simulation, NANOS, prosthesis migration",
author = "Behrens, {B. A.} and A. Bouguecha and M. Lerch and S. Betancur and C. Stukenborg-Colsman and I. Nolte and K. Lucas and A. Almohallami",
year = "2015",
month = sep,
day = "1",
doi = "10.1515/cdbme-2015-0093",
language = "English",
volume = "1",
pages = "381--385",
journal = "Current Directions in Biomedical Engineering",
issn = "2364-5504",
publisher = "Walter de Gruyter GmbH",
number = "1",
}