| Autor: |
Joaquin Sanchez-Sotelo, David G. Lewallen, William Scott Harmsen, Jeffrey Harrington, Miguel E. Cabanela |
| Předmět: |
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| Zdroj: |
International Orthopaedics; Aug2004, Vol. 28 Issue 4, p206-210, 5p |
| Abstrakt: |
We compared the clinical and radiographic results of two matched series of total hip arthroplasties, one with hydroxyapatite-coated femoral stems, the other with a similar but porous-coated femoral stem. The prevalence of radiographic osteolysis was 16% in hips with hydroxyapatite-coated stems and 43% in hips with porous-coated femoral stems. In hips with hydroxyapatite-coated stems, osteolysis was always limited to Gruen zones 1 and 7. In contrast, distal osteolysis was present around 26% of the porous-coated stems. At 7 years, the survival-free rate of distal osteolysis was 100% in hips with hydroxyapatite-coated stems but 90% in hips with porous-coated stems ( p=0.04). Circumferential hydroxyapatite coating of the femoral component reduced the occurrence of osteolysis and eliminated distal osteolysis at 5?10 years of follow-up. In addition, hydroxyapatite coating did not alter the wear rate. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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