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Total knee arthroplasty with computer-assisted navigation: an analysis of 200 cases

to evaluate the results from surgery with computer-assisted navigation in cases of total knee arthroplasty. a total of 196 patients who underwent total knee arthroplasty with computer-assisted navigation were evaluated. The extension and flexion spaces (gaps) were evaluated during the operation and...

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Published in:Revista brasileira de ortopedia 2014-03, Vol.49 (2), p.149-153
Main Authors: Luzo, Marcus Vinicius Malheiros, Ambra, Luiz Felipe Morlin, Debieux, Pedro, Franciozi, Carlos Eduardo da Silveira, Costi, Raquel Ribeiro, Petrilli, Marcelo de Toledo, Kubota, Marcelo Seiji, Albertoni, Leonardo José Bernardes, de Queiroz, Antônio Altenor Bessa, Ferreira, Fábio Pacheco, Granata Júnior, Geraldo Sérgio de Mello, Carneiro Filho, Mário
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Language:English
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Summary:to evaluate the results from surgery with computer-assisted navigation in cases of total knee arthroplasty. a total of 196 patients who underwent total knee arthroplasty with computer-assisted navigation were evaluated. The extension and flexion spaces (gaps) were evaluated during the operation and the alignment after the operation was assessed. The Knee Society Score (KSS) questionnaire for assessing patient's function was applied preoperatively and postoperatively after a mean follow-up of 22 months. in all, 86.7% of the patients presented good alignment of the mechanical axis (less than 3° of varus or valgus in relation to the mechanical axis) and 96.4% of the patients presented balanced flexion and extension gaps. Before the operation, 97% of the patients presented poor or insufficient KSS, but after the operation, 77.6% presented good or excellent KSS. the navigation system made it possible to achieve aligned and balanced implants, with notable functional improvement among the patients. It was found to be useful in assessing, understanding and improving knowledge in relation to performing arthroplasty procedures. avaliar os resultados das cirurgias assistidas por navegação (CAN) nas artroplastias totais de joelho. foram avaliados 196 pacientes submetidos à artroplastia total de joelho com auxílio da navegação por computador. Avaliados no intraoperatório os espaços (gaps) de extensão e de flexão, o alinhamento pós-operatório e o questionário funcional da Knee Society Score (KSS) pré-operatório e pós-operatório com seguimento médio de 22 meses. dos pacientes, 86,7% apresentaram bom alinhamento do eixo mecânico (dentro de 3° de varo ou valgo em relação ao eixo mecânico) e 96,4% apresentaram ambos os gaps de flexão e extensão balanceados. No pré-operatório, 97% dos pacientes apresentavam KSS funcional ruim ou insuficiente, no pós-operatório 77,6% apresentavam KSS funcional bom ou excelente. a navegação proporcionou a obtenção de implantes alinhados e balanceados com importante melhoria da função nos pacientes. Foram evidenciados sua utilidade no estudo, o entendimento e o aperfeiçoamento do conhecimento na execução das artroplastias.
ISSN:2255-4971
1982-4378
2255-4971
DOI:10.1016/j.rboe.2014.03.001