Details
| Original language | English |
|---|---|
| Pages (from-to) | 1822-1829 |
| Number of pages | 8 |
| Journal | Journal of orthopaedic research |
| Volume | 30 |
| Issue number | 11 |
| Publication status | Published - 18 Apr 2012 |
Abstract
In total hip arthroplasty (THA), short stemmed cementless implants are used because they are thought to stimulate physiological bone remodeling and reduce stress shielding. We performed a numerical investigation on bone remodeling after implantation of a specific short stemmed implant using finite element analysis (FEA). Overall bone mass loss was 2.8% in the entire femur. Bone mass decrease was mostly found in the proximal part of the calcar and in the greater trochanter due to the vast cross section of the implant, probably leading to stress shielding. In the diaphysis, no change in the apparent bone density was proven. The assumptions made agreed well with bone remodeling data from THA recipients who underwent dual-energy X-ray absorptiometry. However, the clinical investigation revealed a bone mass increase in the minor trochanter region that was less pronounced in the FEA. Further comparisons to other stem designs must be done to verify if the relative advantages of the investigated implant can be accepted.
Keywords
- bone remodeling, dual-energy X-ray absorptiometry, finite element analysis, short stemmed implant, total hip arthroplasty
ASJC Scopus subject areas
- Medicine(all)
- Orthopedics and Sports Medicine
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In: Journal of orthopaedic research, Vol. 30, No. 11, 18.04.2012, p. 1822-1829.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Bone Remodeling after Total Hip Arthroplasty with a Short Stemmed Metaphyseal Loading Implant: Finite Element Analysis Validated by a Prospective DEXA Investigation
AU - Lerch, Matthias
AU - Kurtz, Agnes
AU - Stukenborg-Colsman, Christina
AU - Nolte, Ingo
AU - Weigel, Nelly
AU - Bouguecha, Anas
AU - Behrens, Bernd A.
PY - 2012/4/18
Y1 - 2012/4/18
N2 - In total hip arthroplasty (THA), short stemmed cementless implants are used because they are thought to stimulate physiological bone remodeling and reduce stress shielding. We performed a numerical investigation on bone remodeling after implantation of a specific short stemmed implant using finite element analysis (FEA). Overall bone mass loss was 2.8% in the entire femur. Bone mass decrease was mostly found in the proximal part of the calcar and in the greater trochanter due to the vast cross section of the implant, probably leading to stress shielding. In the diaphysis, no change in the apparent bone density was proven. The assumptions made agreed well with bone remodeling data from THA recipients who underwent dual-energy X-ray absorptiometry. However, the clinical investigation revealed a bone mass increase in the minor trochanter region that was less pronounced in the FEA. Further comparisons to other stem designs must be done to verify if the relative advantages of the investigated implant can be accepted.
AB - In total hip arthroplasty (THA), short stemmed cementless implants are used because they are thought to stimulate physiological bone remodeling and reduce stress shielding. We performed a numerical investigation on bone remodeling after implantation of a specific short stemmed implant using finite element analysis (FEA). Overall bone mass loss was 2.8% in the entire femur. Bone mass decrease was mostly found in the proximal part of the calcar and in the greater trochanter due to the vast cross section of the implant, probably leading to stress shielding. In the diaphysis, no change in the apparent bone density was proven. The assumptions made agreed well with bone remodeling data from THA recipients who underwent dual-energy X-ray absorptiometry. However, the clinical investigation revealed a bone mass increase in the minor trochanter region that was less pronounced in the FEA. Further comparisons to other stem designs must be done to verify if the relative advantages of the investigated implant can be accepted.
KW - bone remodeling
KW - dual-energy X-ray absorptiometry
KW - finite element analysis
KW - short stemmed implant
KW - total hip arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=84867231759&partnerID=8YFLogxK
U2 - 10.1002/jor.22120
DO - 10.1002/jor.22120
M3 - Article
C2 - 22513505
AN - SCOPUS:84867231759
VL - 30
SP - 1822
EP - 1829
JO - Journal of orthopaedic research
JF - Journal of orthopaedic research
SN - 0736-0266
IS - 11
ER -