Serum ion levels after ceramic-on-ceramic and metal-on-metal total hip arthroplasty: 8-year minimum follow-up
| Autor: | Armando Giunti, Elisabetta Cenni, Giorgio Perrone, Nicola Baldini, Greco F, Massimo Ferretti, Giovanni Padovani, Lucia Savarino, M. Greco |
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| Přispěvatelé: | Savarino L, Padovani G, Ferretti M, Greco M, Cenni E, Perrone G, Greco F, Baldini N, Giunti A. |
| Rok vydání: | 2008 |
| Předmět: |
Adult
Chromium Male Ceramics medicine.medical_specialty Osteolysis Arthroplasty Replacement Hip Metal ions in aqueous solution medicine.medical_treatment Dentistry chemistry.chemical_element Ion Metal Young Adult Reference Values medicine Humans Orthopedics and Sports Medicine Ceramic Aged Aged 80 and over business.industry Chemistry Cobalt Middle Aged medicine.disease Arthroplasty Surgery Metals Case-Control Studies visual_art visual_art.visual_art_medium Female Hip Prosthesis business Follow-Up Studies Total hip arthroplasty Titanium |
| Zdroj: | Journal of Orthopaedic Research. 26:1569-1576 |
| ISSN: | 1554-527X 0736-0266 |
| DOI: | 10.1002/jor.20701 |
| Popis: | Alternative bearing surfaces for total hip arthroplasty, such as metal-on-metal and ceramic-on-ceramic, offer the potential to reduce mechanical wear and osteolysis. In the short and medium term, the second generation of metal-on-metal bearings demonstrated high systemic metal ion levels, whereas ceramic-on-ceramic bearings showed the lowest ones. We aimed to verify whether the long-term ion release in metal-on-metal subjects was still relevant at a median 10-year follow-up, and whether a fretting process at the modular junctions occurred in ceramic-on-ceramic patients and induced an ion dissemination. Serum levels were measured in 32 patients with alumina-on-alumina implants (group A), in 16 subjects with metal-on-metal implants (group B), and in 47 healthy subjects (group C). Group B results were compared with medium-term findings. Cobalt and chromium levels were significantly higher in metal-on-metal implants than in ceramic-on-ceramic ones and controls. Nevertheless, ion levels showed a tendency to decrease in comparison with medium-term content. In ceramic-on-ceramic implants, ion values were not significantly different from controls. Both in groups A and B, aluminum and titanium release were not significantly different from controls. In conclusion, negligible serum metal ion content was revealed in ceramic-on-ceramic patients. On the contrary, due to the higher ion release, metal-on-metal coupling must be prudently considered, especially in young patients, in order to obtain definitive conclusions. |
| Databáze: | OpenAIRE |
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