Fabrication and Testing of Silicon Nitride Bearings in Total Hip Arthroplasty Winner of the 2007 "HAP" PAUL Award
Fabrication and Testing of Silicon Nitride Bearings in Total Hip Arthroplasty Winner of the 2007 "HAP" PAUL Award
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DOI：
10.1016/j.arth.2008.01.300
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发表时间：
2009-01-01
影响因子：
3.5
通讯作者：
Rahaman, Mohamed N.
中科院分区：
文献类型：
--
作者：
Bal, B. Sonny;Khandkar, Ashok;Rahaman, Mohamed N.
全髋关节置换术（THA）的听证会是由氮化硅（Si 3 N4）粉末。力学性能测试表明，Si_3N_4陶瓷的断裂韧性和断裂强度均优于现代氧化铝陶瓷。当在髋关节模拟器中使用Si 3 N4髋臼杯进行测试时，钴铬（CoCr）和Si 3 N4股骨头的磨损率均较低，与THA中的Al 2 O3-Al 2 O3关节面相当。本研究为新型金属-陶瓷THA关节面组合提供了实验支持，该组合结合了CoCr股骨头的可靠性和陶瓷表面的磨损优势。
Total hip arthroplasty (THA) hearings were fabricated from silicon nitride (Si3N4) powder. Mechanical testing showed that Si3N4 had improved fracture toughness and fracture strength over modern alumina (Al2O3) ceramic. When tested with Si3N4 cups in a hip simulator, both cobalt-chromium (CoCr) and Si3N4 femoral heads produced low wear rates that were comparable to Al2O3-Al2O3 bearings in THA. This study offers experimental support for a novel metal-ceramic THA bearing couple that combines the reliability of CoCr femoral heads with the wear advantages of ceramic surfaces.