| Literature DB >> 18534403 |
B Sonny Bal1, Ashok Khandkar, R Lakshminarayanan, Ian Clarke, Aaron A Hoffman, Mohamed N Rahaman.
Abstract
Total hip arthroplasty (THA) bearings were fabricated from silicon nitride (Si(3)N(4)) powder. Mechanical testing showed that Si(3)N(4) had improved fracture toughness and fracture strength over modern alumina (Al(2)O(3)) ceramic. When tested with Si(3)N(4) cups in a hip simulator, both cobalt-chromium (CoCr) and Si(3)N(4) femoral heads produced low wear rates that were comparable to Al(2)O(3)-Al(2)O(3) 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.Entities:
Mesh：
Substances：
Year: 2008 PMID： 18534403 DOI： 10.1016/j.arth.2008.01.300
Source DB: PubMed Journal: J Arthroplasty ISSN： 0883-5403 Impact factor: 4.757