作者: B. Sonny Bal , Ashok Khandkar , R. Lakshminarayanan , Ian Clarke , Aaron A. Hoffman
DOI: 10.1016/J.ARTH.2008.01.300
关键词: Ceramic 、 Composite material 、 Silicon nitride 、 Total hip arthroplasty 、 Fabrication 、 Hip simulator 、 Bearing (mechanical) 、 Forensic engineering 、 Flexural strength 、 Medicine 、 Fracture toughness
摘要: Total hip arthroplasty (THA) bearings were fabricated from silicon nitride (Si3N4) powder. Mechanical testing showed that Si3N4 had improved fracture toughness and strength over modern alumina (Al2O3) ceramic. When tested with cups in a simulator, both cobalt-chromium (CoCr) femoral heads produced low wear rates comparable to Al2O3-Al2O3 THA. This study offers experimental support for novel metal-ceramic THA bearing couple combines the reliability of CoCr advantages ceramic surfaces.