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Long-term durability of alumina ceramic heads in THA
- Source :
- BMC Musculoskeletal Disorders
- Publication Year :
- 2015
- Publisher :
- BioMed Central, 2015.
-
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.
- Subjects :
- THA
Adult
Male
medicine.medical_specialty
Time Factors
Adolescent
Long term durability
medicine.medical_treatment
Arthroplasty, Replacement, Hip
Prosthesis Design
law.invention
THR
Young Adult
610 Medical sciences Medicine
Rheumatology
law
Hip replacement
Aluminum Oxide
Medicine
Humans
Orthopedics and Sports Medicine
Cumulative incidence
Ceramic
Aged
Aged, 80 and over
Bearing (mechanical)
business.industry
Hip Replacement
Middle Aged
Hip Arthroplasty
Arthroplasty
Surgery
Prosthesis Failure
Hip arthroplasty
Polyethylene
visual_art
Orthopedic surgery
visual_art.visual_art_medium
Female
Hip Prosthesis
business
Bearings
Research Article
Follow-Up Studies
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- BMC Musculoskeletal Disorders
- Accession number :
- edsair.doi.dedup.....e0c6e2237be81a042ff8f7346d4125c6