Initial stability of press-fit acetabular components under rotational forces.
Publication
, Journal Article
Fehring, KA; Owen, JR; Kurdin, AA; Wayne, JS; Jiranek, WA
Published in: J Arthroplasty
May 2014
The primary goal of this study was to determine the initial press-fit stability in acetabular components without screw fixation. Mechanical testing was performed with the implantation of press-fit acetabular components in cadaveric specimens. No significant difference was found in load to failure testing between 1 and 2 mm of under-reaming. However, there was significant variability in bending forces required to create 150 μm of micromotion ranging from 49.3 N to 214.4 N. This study shows that cups implanted in a press-fit fashion, which are felt to be clinically stable, have high degrees of variability in resisting load and may be at risk for loosening. There is a need for more objective intra-operative techniques to test cup stability.
Duke Scholars
Published In
J Arthroplasty
DOI
EISSN
1532-8406
Publication Date
May 2014
Volume
29
Issue
5
Start / End Page
1038 / 1042
Location
United States
Related Subject Headings
- Prosthesis Design
- Orthopedics
- Middle Aged
- Humans
- Hip Prosthesis
- Hip Joint
- Cadaver
- Biomechanical Phenomena
- Arthroplasty, Replacement, Hip
- Aged, 80 and over
Citation
APA
Chicago
ICMJE
MLA
NLM
Fehring, K. A., Owen, J. R., Kurdin, A. A., Wayne, J. S., & Jiranek, W. A. (2014). Initial stability of press-fit acetabular components under rotational forces. J Arthroplasty, 29(5), 1038–1042. https://doi.org/10.1016/j.arth.2013.10.009
Published In
J Arthroplasty
DOI
EISSN
1532-8406
Publication Date
May 2014
Volume
29
Issue
5
Start / End Page
1038 / 1042
Location
United States
Related Subject Headings
- Prosthesis Design
- Orthopedics
- Middle Aged
- Humans
- Hip Prosthesis
- Hip Joint
- Cadaver
- Biomechanical Phenomena
- Arthroplasty, Replacement, Hip
- Aged, 80 and over