Abstract
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.
Original language | English (US) |
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Pages (from-to) | 198-204 |
Number of pages | 7 |
Journal | Computer Aided Surgery |
Volume | 17 |
Issue number | 4 |
DOIs | |
State | Published - Jul 2012 |
Keywords
- Accuracy
- Alignment
- Femoral resection
- Recalibration
- Total knee arthroplasty
ASJC Scopus subject areas
- Surgery
- Radiology Nuclear Medicine and imaging