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Long-term durability of alumina ceramic heads in THA

Beckmann, Nicholas A. ; Gotterbarm, Tobias ; Innmann, Moritz M. ; Merle, Christian ; Bruckner, Thomas ; Kretzer, Jan Philippe ; Streit, Marcus R.

In: BMC musculoskeletal disorders, 16 (2015), Nr. 249. S. 1-7. ISSN 1471-2474

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Download (660kB) | Lizenz: Creative Commons LizenzvertragLong-term durability of alumina ceramic heads in THA von Beckmann, Nicholas A. ; Gotterbarm, Tobias ; Innmann, Moritz M. ; Merle, Christian ; Bruckner, Thomas ; Kretzer, Jan Philippe ; Streit, Marcus R. steht unter einer Creative Commons Namensnennung 3.0 Deutschland

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Abstract

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.

Dokumententyp: Artikel
Titel der Zeitschrift: BMC musculoskeletal disorders
Band: 16
Nummer: 249
Verlag: BioMed Central
Ort der Veröffentlichung: London
Erstellungsdatum: 12 Jan. 2016 13:55
Erscheinungsjahr: 2015
ISSN: 1471-2474
Seitenbereich: S. 1-7
Institute/Einrichtungen: Medizinische Fakultät Heidelberg und Uniklinikum > Orthopädische Klinik
Medizinische Fakultät Heidelberg und Uniklinikum > Institut für Medizinische Biometrie
DDC-Sachgruppe: 610 Medizin
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