Comput. Aided Surg. - Is computer-assisted surgery in total knee arthroplasty as accurate as it can be?

Tópicos

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Resumo

Three hundred and eighty computer-assisted total knee arthroplasty cases were reviewed for accuracy of mechanical alignment. The 331 patients in the first set, designated Group A, showed a consistent valgus error of 1? from neutral alignment. It was hypothesized that a manual 1? varus correction during femur resection would yield a significantly greater level of accuracy in the second set of 49 patients, designated Group B. A mechanical alignment of ?3? was achieved in 91% of the uncalibrated Group A patients, which was significantly lower (p = 0.035) than the rate of 98% achieved in the calibrated Group B. Further statistical analysis of the data showed the time expenditure was not significantly changed once a new target value was recalibrated. By quantifying mean errors of measures at an early timeframe, enhanced accuracy in CAS can be achieved.

Resumo Limpo

three hundr eighti computerassist total knee arthroplasti case review accuraci mechan align patient first set design group show consist valgus error neutral align hypothes manual varus correct femur resect yield signific greater level accuraci second set patient design group b mechan align achiev uncalibr group patient signific lower p rate achiev calibr group b statist analysi data show time expenditur signific chang new target valu recalibr quantifi mean error measur earli timefram enhanc accuraci cas can achiev

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