Stresses in cement mantles of hip replacements Effect of femoral implant sizes, body mass index and bone quality.pdf (667.23 kB)
Stresses in cement mantles of hip replacements: effect of femoral implant sizes, body mass index and bone quality
journal contribution
posted on 2023-08-30, 13:33 authored by Steeve Lamvohee, Rajshree Mootanah, Paul Ingle, Kevin Cheah, John K. DowellThe effects of femoral prosthetic heads of diameters 22 and 28 mm were investigated on the stability of reconstructed hemi-pelves with cement mantles of thicknesses 1-4 mm and different bone qualities. Materialise medical imaging package and I-Deas finite element (FE) software were used to create accurate geometry of a hemi-pelvis from CT-scan images. Our FE results show an increase in cement mantle stresses associated with the larger femoral head. When a 22 mm femoral head is used on acetabulae of diameters 56 mm and above, the probability of survivorship can be increased by creating a cement mantle of at least 1 mm thick. However, when a 28 mm femoral head is used, a cement mantle thickness of at least 4 mm is needed. Poor bone quality resulted in an average 45% increase in the tensile stresses of the cement mantles, indicating resulting poor survivorship rate.
History
Refereed
- Yes
Volume
12Issue number
5Page range
501-510Publication title
Computer Methods in Biomechanics and Biomedical EngineeringISSN
1476-8259External DOI
Publisher
Taylor & FrancisFile version
- Accepted version
Language
- eng
Official URL
Legacy posted date
2011-06-15Legacy creation date
2019-04-16Legacy Faculty/School/Department
ARCHIVED Faculty of Science & Technology (until September 2018)Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC