Lamvohee, Steeve and Mootanah, Rajshree and Ingle, Paul and Cheah, Kevin and Dowell, John K. (2009) Stresses in cement mantles of hip replacements: effect of femoral implant sizes, body mass index and bone quality. Computer Methods in Biomechanics and Biomedical Engineering, 12 (5). pp. 501-510. ISSN 1476-8259
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Abstract
The 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.
| Item Type: | Journal Article |
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| Keywords: | femoral implant, cement mantle thickness, total hip replacement, reconstructed acetabulum, finite element method, bone quality |
| Faculty: | ARCHIVED Faculty of Science & Technology (until September 2018) |
| Depositing User: | Repository Admin |
| Date Deposited: | 15 Jun 2011 15:43 |
| Last Modified: | 31 Jan 2022 10:47 |
| URI: | https://arro.anglia.ac.uk/id/eprint/133297 |
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