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  • Title: Total hip arthroplasty with the porous-coated anatomic hip prosthesis: results at 11 to 18 years.
    Author: Little BS, Wixson RL, Stulberg SD.
    Journal: J Arthroplasty; 2006 Apr; 21(3):338-43. PubMed ID: 16627140.
    Abstract:
    The authors had previously reported good results with apparent fixation of a series of porous-coated anatomic hips at 2 to 4 years. In a larger series of 133 hips with porous-coated anatomic uncemented components, 91 hips in 82 patients were available for a follow-up of 11 years or greater. Although 3.1% of acetabular cups had migrated or had been revised at 2 to 4 years; at 11 to 18 years, there was 37% lysis, 21.7% migration, and 32.3% revision. For the femur at 2 to 4 years, there was 3.1% migration and 1.5% revision. At 11 to 18 years, there was 27.2% lysis (proximal only), 6.6% migration, and 3.2% revision. Survival analysis for migration or revision for the femoral was 94%, and for the acetabular component, 63%, deteriorating markedly after 10 years.
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