Details
| Original language | English |
|---|---|
| Pages (from-to) | 381-385 |
| Number of pages | 5 |
| Journal | Current Directions in Biomedical Engineering |
| Volume | 1 |
| Issue number | 1 |
| Publication status | Published - 1 Sept 2015 |
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.
Keywords
- bone remodelling, finite element, multi body human simulation, NANOS, prosthesis migration
ASJC Scopus subject areas
- Engineering(all)
- Biomedical Engineering
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In: Current Directions in Biomedical Engineering, Vol. 1, No. 1, 01.09.2015, p. 381-385.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerical analysis of the biomechanical complications accompanying the total hip replacement with NANOS-Prosthetic
T2 - Bone remodelling and prosthesis migration
AU - Behrens, B. A.
AU - Bouguecha, A.
AU - Lerch, M.
AU - Betancur, S.
AU - Stukenborg-Colsman, C.
AU - Nolte, I.
AU - Lucas, K.
AU - Almohallami, A.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - 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.
AB - 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.
KW - bone remodelling
KW - finite element
KW - multi body human simulation
KW - NANOS
KW - prosthesis migration
UR - http://www.scopus.com/inward/record.url?scp=85112656931&partnerID=8YFLogxK
U2 - 10.1515/cdbme-2015-0093
DO - 10.1515/cdbme-2015-0093
M3 - Article
AN - SCOPUS:85112656931
VL - 1
SP - 381
EP - 385
JO - Current Directions in Biomedical Engineering
JF - Current Directions in Biomedical Engineering
IS - 1
ER -