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Migration of a cemented fixed-bearing, polished titanium tibial baseplate (Genesis II) at ten years : a radiostereometric analysis.
Teeter, M G; Thoren, J; Yuan, X; McCalden, R W; MacDonald, S J; Lanting, B A; Naudie, D D R.
Afiliación
  • Teeter MG; Lawson Health Research Institute, 339 Windermere Road, London, ON, N6A 5A5, Canada.
  • Thoren J; London Health Sciences Centre, 339 Windermere Road, London, ON, N6A 5A5, Canada.
  • Yuan X; Robarts Research Institute, 1151 Richmond Street, London, ON, N6A 3K7, Canada.
  • McCalden RW; London Health Sciences Centre, 339 Windermere Road, London, ON, N6A 5A5, Canada.
  • MacDonald SJ; London Health Sciences Centre, 339 Windermere Road, London, ON, N6A 5A5, Canada.
  • Lanting BA; London Health Sciences Centre, 339 Windermere Road, London, ON, N6A 5A5, Canada.
  • Naudie DD; London Health Sciences Centre, 339 Windermere Road, London, ON, N6A 5A5, Canada.
Bone Joint J ; 98-B(5): 616-21, 2016 May.
Article en En | MEDLINE | ID: mdl-27143731
AIMS: The purpose of the present study was to examine the long-term fixation of a cemented fixed-bearing polished titanium tibial baseplate (Genesis ll). PATIENTS AND METHODS: Patients enrolled in a previous two-year prospective trial (n = 35) were recalled at ten years. Available patients (n = 15) underwent radiostereometric analysis (RSA) imaging in a supine position using a conventional RSA protocol. Migration of the tibial component in all planes was compared between initial and ten-year follow-up. Outcome scores including the Knee Society Score, Western Ontario and McMaster Universities Arthritis Index, 12-item Short Form Health Survey, Forgotten Joint Score, and University of California, Los Angeles Activity Score were recorded. RESULTS: At ten years, the mean migration of the tibial component was less than 0.1 mm and 0.1° in all planes relative to the post-operative RSA exam. Maximum total point movement increased with time (p = 0.002) from 0.23 mm (sd 0.18) at six weeks to 0.42 mm (sd 0.20) at ten years. CONCLUSION: The low level of tibial baseplate migration found in the present study correlates to the low rate of revision for this implant as reported in individual studies and in joint replacement registries. TAKE HOME MESSAGE: Overall, the implant was found to be well fixed at ten years, supporting its continued clinical use and the predictive power of RSA for determining long-term fixation of implants. Cite this article: Bone Joint J 2016;98-B:616-21.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Artroplastia de Reemplazo de Rodilla / Articulación de la Rodilla / Prótesis de la Rodilla Tipo de estudio: Guideline / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Aged / Female / Humans / Male Idioma: En Revista: Bone Joint J Año: 2016 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Artroplastia de Reemplazo de Rodilla / Articulación de la Rodilla / Prótesis de la Rodilla Tipo de estudio: Guideline / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Aged / Female / Humans / Male Idioma: En Revista: Bone Joint J Año: 2016 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido