Abstract
The effect of bone compaction vs conventional drilling on the fixation of hydroxyapatite-coated implants was examined in a weight-bearing canine model. In each dog, one knee joint had the implant cavity prepared with drilling, the other with compaction. Eight dogs were euthanized after 2 weeks and 8 dogs after 4 weeks. Femoral condyles from additional 7 dogs represented time 0. Compacted specimens had significantly higher bone implant contact and energy absorption at time 0. Compaction significantly increased ultimate shear strength at 0 and 2 weeks. There was no significant difference in implant fixation after 4 weeks. The results of this study suggest that compaction may be beneficial in optimizing the crucial initial implant stability, even when hydroxyapatite-coated implants with osteoconductive properties are inserted in vivo.
Original language | English |
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Journal | Journal of Arthroplasty |
Volume | 21 |
Issue number | 2 |
Pages (from-to) | 263-70 |
Number of pages | 8 |
ISSN | 0883-5403 |
DOIs | |
Publication status | Published - Feb 2006 |
Externally published | Yes |
Keywords
- Animals
- Biocompatible Materials
- Dogs
- Durapatite
- Female
- Knee Prosthesis
- Male
- Prosthesis Design
- Weight-Bearing