Total knee arthroplasty with mobile tibial weight-bearing: clinical evaluation after a minimum of five years of postoperative follow-up

To evaluate the medium and long term results from total knee arthroplasty with rotating tibial weight-bearing. Between January 2000 and July 2007, 162 patients underwent total knee arthroplasty with mobile tibial weight-bearing. Among these, 96 were evaluated in a previous study with a mean follow-up of 4 years. In the present study, the same group was invited back for reassessment and the results were analyzed. Sixty-nine patients responded to this call (79 knees), and they were evaluated in accordance with the Knee Society Rating System (KSRS), after a mean follow-up of 8 years and 8 months (ranging from 5.5 and 13 years). A mean KSRS score of 74.41 points was obtained, with good or excellent results. The medium and long-term results from total knee arthroplasty with mobile tibial weight-bearing were good, and a mean score of 74.41 points in the Knee Society Clinical Rating System was attained. Avaliar os resultados, em médio e longo prazo, das artroplastias totais de joelho com apoio tibial rotatório. De janeiro de 2000 a julho de 2007, 162 pacientes foram submetidos à artroplastia total do joelho com apoio tibial móvel. Desses, 96 foram avaliados em um estudo prévio com tempo de seguimento médio de quatro anos. No atual trabalho, esse mesmo grupo foi convocado para reavaliação e os resultados foram analisados. Responderam à atual convocação 69 pacientes (79 joelhos), que foram avaliados conforme o Knee Society Rating System (KSRS), após seguimento médio de oito anos e oito meses (variação entre 5,5 e 13 anos). Foi obtida pontuação média de 74,41 pontos no KSRS, com 78,7% de resultados bons ou excelentes. A artroplastia total do joelho com apoio tibial móvel obteve bons resultados em médio e longo prazo e atingiu a média de 74,41 pontos no Knee Society Clinical Rating System.