alexa Causes of failure of ceramic-on-ceramic and metal-on-metal hip arthroplasties.


Journal of Arthritis

Author(s): Porat M, Parvizi J, Sharkey PF, Berend KR, Lombardi AV Jr,

Abstract Share this page

Abstract BACKGROUND: Few large series of hard bearing surfaces have reported on reasons for early failure. A number of unique mechanisms of failure, including fracture, squeaking, and adverse tissue reactions, have been reported with these hard bearing surfaces. However, the incidence varies among the published studies. QUESTIONS/PURPOSES: To confirm the incidences, we identified the etiologies of early failures of hard-on-hard bearing surfaces for ceramic-on-ceramic and metal-on-metal THAs. METHODS: We retrospectively reviewed records of 2907 THAs with hard-on-hard bearing surfaces implanted between 1996 and 2009; 1697 (58\%) had ceramic-on-ceramic and 1210 (42\%) had metal-on-metal bearing surfaces. We recorded bearing-related complications and compared them to nonspecific reasons for revision THA. The minimum followup of the ceramic-on-ceramic and metal-on-metal cohorts was 6 months (mean, 48 months; range, 6-97 months) and 24 months (mean, 60 months; range, 24-178 months), respectively. RESULTS: The overall revision rate for ceramic-on-ceramic THA was 2.2\% (38 of 1697), with aseptic loosening accounting for 55\% of revisions (femur or acetabulum). The bearing accounted for 13\% of the revisions in the ceramic-on-ceramic THA cohort. The overall metal-on-metal revision rate was 5.4\% (65 of 1210), 17 involving adverse tissue reactions related to the metal-on-metal bearing surface (17 of 1210, 1.4\% of cases; 17 of 65, 26\% of revisions). CONCLUSIONS: Twenty-six percent of the revisions from metal-on-metal and 13\% of ceramic-on ceramic were bearing related. The overall short- to medium-term revision rate was 2.2\% and 5.4\% for ceramic-on-ceramic and metal-on-metal, respectively. The most common etiology of failure was loosening of the femoral or acetabular components. LEVEL OF EVIDENCE: Level IV, therapeutic study. See the Guidelines for Authors for a complete description of level of evidence.
This article was published in Clin Orthop Relat Res and referenced in Journal of Arthritis

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version