The effect of bone compaction on early fixation of porous-coated implants |
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| Affiliation: | 1. Medical Physics Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran;2. Quantitative Medical Imaging Systems Group, Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran;3. Medical Physics and Biomedical Engineering Department, Tehran University of Medical Sciences, Tehran, Iran;4. Department of Radiological Sciences, Department of Biomedical Engineering and Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA, USA;5. Department of Mathematics, Islamic Azad University, Qazvin Branch, Qazvin, Iran;6. Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran;7. Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran;8. Department of Applied Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran;1. Department of Orthopedic Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan;2. Nagasaki University School of Medicine, Nagasaki, Japan;1. AHORSE Foundation, Dept Orthopaedics, Atrium Medical Center Heerlen, The Netherlands;2. Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Southmead Hospital, Bristol, United Kingdom |
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| Abstract: | The effect of a bone compaction technique versus conventional drilling on the early fixation of porous-coated implants was examined in a canine model. Compaction dilation resulted in a significant increase in implant fixation stiffness (P < .01) and ultimate fixation strength (P < .01) at 0 and 3 weeks. Fixation stiffness remained significantly increased at 6 weeks (P < .01); however, the ultimate fixation strength was not statistically significant between the 2 techniques (P > .05). There was no significant difference in either fixation value at 9 weeks (P > .05). Histological examination of the bone-implant interface demonstrated an increase in the density of cancellous bone immediately adjacent to the implants placed in the compaction dilated holes. The results of this study suggest that the compaction method of host bone preparation may optimize the initial stability of the implant interface of porous-coated prostheses. |
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