<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Long-term durability of alumina ceramic heads in THA"^^ . "Background: The optimal type of bearing for hip arthroplasty remains a matter of debate. Ceramic-on-polyethylene (CoP) bearings are frequently used in younger and more active patients to reduce wear and increase biocompatibility compared to Metal-on-Polyethylene (MoP) bearings. However, in comparison to metal heads, the fracture risk of ceramic heads is higher. In addition, ceramic head fractures pose a serious complication which often necessitates major revision surgery. To date, there are no long-term data (>20 years of follow-up) reporting fracture rates of the ceramic femoral heads in CoP bearings. The purpose of this research was to investigate long-term CoP fracture rate. Methods: We evaluated the clinical and radiographic results of 348 cementless THAs treated with 2nd generation Biolox® Al2O3 Ceramic-on-Polyethylene (CoP) bearings consecutively implanted between January 1985 and December 1989. The mean age at implantation was 57 years. The patients were followed for a minimum of 20 years. At the final 111 had died, and 5 were lost to follow-up. The cumulative incidence of ceramic head fractures in the long-term was estimated using a competing risk analysis. Results: The cumulative incidence of ceramic head fracture after 22-years was estimated with a competing risk analysis at 0.29% after 22-years (SE = 2.09%; 95% - CI: 0.03-1.5%). The radiographic analysis revealed no impending failures at final follow-up. Discussion/Conclusion: The fracture rate of second-generation ceramic heads using a CoP articulation remains very low into the third decade after cementless THA. "^^ . "2015" . . "16" . "249" . . "BioMed Central"^^ . . . "BMC musculoskeletal disorders"^^ . . . "14712474" . . . . . . . . . . . . . . . . . . . . . . . "Marcus R."^^ . "Streit"^^ . "Marcus R. Streit"^^ . . "Thomas"^^ . "Bruckner"^^ . "Thomas Bruckner"^^ . . "Tobias"^^ . "Gotterbarm"^^ . "Tobias Gotterbarm"^^ . . "Moritz M."^^ . "Innmann"^^ . "Moritz M. Innmann"^^ . . "Nicholas A."^^ . "Beckmann"^^ . "Nicholas A. Beckmann"^^ . . "Christian"^^ . "Merle"^^ . "Christian Merle"^^ . . "Jan Philippe"^^ . "Kretzer"^^ . "Jan Philippe Kretzer"^^ . . . . . . "Long-term durability of alumina ceramic heads in THA (PDF)"^^ . . . "12891_2015_Article_703.pdf"^^ . . . "Long-term durability of alumina ceramic heads in THA (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Long-term durability of alumina ceramic heads in THA (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Long-term durability of alumina ceramic heads in THA (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Long-term durability of alumina ceramic heads in THA (Other)"^^ . . . . . . "small.jpg"^^ . . . "Long-term durability of alumina ceramic heads in THA (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #19443 \n\nLong-term durability of alumina ceramic heads in THA\n\n" . "text/html" . . . "610 Medizin"@de . "610 Medical sciences Medicine"@en . .