Comput. Aided Surg. - Comparison of analog 2D and digital 3D preoperative templating for predicting implant size in total knee arthroplasty.

Tópicos

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Resumo

The aim of this study was to compare the accuracy of preoperative templating in total knee arthroplasty (TKA) using conventional two-dimensional (2D) and computed tomography (CT)-based three-dimensional (3D) procedures, and to confirm the necessity of 3D evaluation for preoperative planning. One hundred consecutive primary TKAs were analyzed. Preoperative templating was performed for each TKA using both conventional 2D radiographs and a CT-based 3D image model created using KneeCAS software. Accuracies with regard to the predicted and actual implant sizes were determined for each procedure. The 3D procedure was found to be more accurate (59%) than the 2D procedure (56%) in predicting implant size, but the difference was not statistically significant (p = 0.67). Computer-assisted surgery systems are often used for preoperative planning in TKA. However, our results do not support the superiority of 3D preoperative templating over 2D conventional evaluation in predicting implant size. Thus, 3D templating may not be necessary for preoperatively predicting implant size in TKA, and can only be used as an approximate guide.

Resumo Limpo

aim studi compar accuraci preoper templat total knee arthroplasti tka use convent twodimension d comput tomographi ctbase threedimension d procedur confirm necess d evalu preoper plan one hundr consecut primari tkas analyz preoper templat perform tka use convent d radiograph ctbase d imag model creat use kneeca softwar accuraci regard predict actual implant size determin procedur d procedur found accur d procedur predict implant size differ statist signific p computerassist surgeri system often use preoper plan tka howev result support superior d preoper templat d convent evalu predict implant size thus d templat may necessari preoper predict implant size tka can use approxim guid

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