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Inducible displacement of cemented tibial components ten years after total knee arthroplasty.
Lam Tin Cheung, K; Lanting, B A; McCalden, R W; Yuan, X; MacDonald, S J; Naudie, D D; Teeter, M G.
Afiliación
  • Lam Tin Cheung K; Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, Ontario N6A 5C1, Canada.
  • Lanting BA; Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre.
  • McCalden RW; Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre.
  • Yuan X; Robarts Research Institute.
  • MacDonald SJ; Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre.
  • Naudie DD; Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre.
  • Teeter MG; Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, 1151 Richmond Street, London, Ontario N6A 5C1, Canada and Imaging Research Laboratories, Robarts Research Institute, 1151 Richmond Street, London, Ontario N6A 5C1, Canada and Surgical Innovation Progra
Bone Joint J ; 100-B(2): 170-175, 2018 Feb.
Article en En | MEDLINE | ID: mdl-29437058
AIMS: The aim of this study was to evaluate the long-term inducible displacement of cemented tibial components ten years after total knee arthroplasty (TKA). PATIENTS AND METHODS: A total of 15 patients from a previously reported prospective trial of fixation using radiostereometric analysis (RSA) were examined at a mean of 11 years (10 to 11) postoperatively. Longitudinal supine RSA examinations were acquired at one week, one year, and two years postoperatively and at final follow-up. Weight-bearing RSA examinations were also undertaken with the operated lower limb in neutral and in maximum internal rotation positions. Maximum total point motion (MTPM) was calculated for the longitudinal and inducible displacement examinations (supine versus standing, standing versus internal rotation, and supine versus standing with internal rotation). RESULTS: All patients showed some inducible displacement. Two patients with radiolucent lines had greater mean standing-supine MTPM displacement (1.35; sd 0.38) compared with the remaining patients (0.68; sd 0.36). These two patients also had a greater mean longitudinal MTPM at ten years (0.64; sd 0.50) compared with the remaining patients (0.39; sd 0.13 mm). CONCLUSION: Small inducible displacements in well-fixed cemented tibial components were seen ten years postoperatively, of a similar magnitude to that which has been reported for well-fixed components one to two years postoperatively. Greater displacements were found in components with radiolucent lines. Cite this article: Bone Joint J 2018;100-B:170-5.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Tibia / Falla de Prótesis / Artroplastia de Reemplazo de Rodilla / Prótesis de la Rodilla Tipo de estudio: Observational_studies Límite: Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Bone Joint J Año: 2018 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: Tibia / Falla de Prótesis / Artroplastia de Reemplazo de Rodilla / Prótesis de la Rodilla Tipo de estudio: Observational_studies Límite: Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Bone Joint J Año: 2018 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido