title: Long-term durability of alumina ceramic heads in THA
creator: Beckmann, Nicholas A.
creator: Gotterbarm, Tobias
creator: Innmann, Moritz M.
creator: Merle, Christian
creator: Bruckner, Thomas
creator: Kretzer, Jan Philippe
creator: Streit, Marcus R.
subject: ddc-610
subject: 610 Medical sciences Medicine
description: 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.  
publisher: BioMed Central
date: 2015
type: Article
type: info:eu-repo/semantics/article
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/19443/1/12891_2015_Article_703.pdf
identifier: DOI:
identifier: urn:nbn:de:bsz:16-heidok-194436
identifier:   Beckmann, Nicholas A. ; Gotterbarm, Tobias ; Innmann, Moritz M. ; Merle, Christian ; Bruckner, Thomas ; Kretzer, Jan Philippe ; Streit, Marcus R.  (2015) Long-term durability of alumina ceramic heads in THA.  BMC musculoskeletal disorders, 16 (249).  pp. 1-7.  ISSN 1471-2474     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/19443/
rights: info:eu-repo/semantics/openAccess
rights: Please see front page of the work (Sorry, Dublin Core plugin does not recognise license id)
language: eng