| 金属与羟基磷灰石微孔表面股骨植入体与骨结合强度的比较研究 |
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| 引用本文： | 齐新生,陈辉,李永刚,李雪松.金属与羟基磷灰石微孔表面股骨植入体与骨结合强度的比较研究[J].中国矫形外科杂志,2001,8(7):678-679. |
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| 作者姓名： | 齐新生 陈辉 李永刚 李雪松 |
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| 作者单位： | 1. 东南大学附属中大医院骨科
2. 哈尔滨医科大学一附院骨科 |
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| 基金项目： | 铁道部科技基金资助项目(J94Z013) |
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| 摘 要： | 目的比较金属与羟基磷灰石(hydroxyapatite,HA)微孔表面股骨植入体与骨的结合强度.方法用等离子喷涂技术,分别喷涂HA微粒和钴铬钼合金微粒于不锈钢三棱针表面,配对植入15只成年家兔的股骨,饲养2个月作拔出试验,并比较手术当日与2个月后的X线改变.结果HA与钴铬钼合金涂层三棱针平均剪切强度分别为(0.98±0.12)MPa和(0.65±0.15)MPa,二者有显著性差异(P＜0.05).X线片HA涂层三棱针周围有较多的成骨反应,透明区较金属涂层三棱针要少而窄.结论植入兔的股骨短时间内,HA微孔表面植入体较金属微孔表面植入体更为稳定.
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| 关 键 词： | 羟基磷灰石 涂层 植入体 界面剪切强度 |
| 文章编号： | 1005-8478(2001)07-0678-02 |
| 修稿时间： | 2000年11月29 |
A Comparative Study of the Interface Shear Strength between the Bone and the Implants Coated with Hydroxyapatite(HA) and Porous Metal |
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| QI Xin-sheng,LI Xue-song,CHEN Hui,et al..A Comparative Study of the Interface Shear Strength between the Bone and the Implants Coated with Hydroxyapatite(HA) and Porous Metal[J].The Orthopedic Journal of China,2001,8(7):678-679. |
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| Authors: | QI Xin-sheng LI Xue-song CHEN Hui |
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| Institution: | QI Xin-sheng,LI Xue-song,CHEN Hui,et al.Department of Orthopaedic Surgery,the Affiliated Zhongda Hospital,Southeast University,Nanjing 210009 |
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| Abstract: | Objective:To compare the interface shear strength between the femurs of adult rabbits and the implants coated with hydroxyapatite (HA) and with porous metal respectively.Methods:Thirty triangular pins were divided into two groups,one group were sprayed with HA and another with Co-Cr-Mo alloy.Two kinds of the nails were in pair implanted into the bilateral femurs of 15 adult rabbits via the top of the greater trochanterics.The animals were killed after 2 months.A pull out test and X-ray examination were taken.Results:The implants coated with HA had significantly greater average interface shear strength,more new bone formation,and less radiolucency zone than the implants with Co-Cr-Mo alloy.Conclusion:The nails coated with HA were of more stability than the nails coated with Co-Cr-Mo alloy in the short period of being implanted into the rabbits femur. |
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| Keywords: | Hydroxyapatites Porous coated implants Interface shear strength |
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