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Table 2 Comparison of absolute differences between the planned and actual bone resections in both groups

From: MRI-based or CT-based patient-specific instrumentation in Total knee Arthroplasty: How do the two systems compare?

(mm)MRI group (N = 36)CT group (N = 35)MRI vs CT
PlannedActualDifferencePlannedActualDifferenceP Value
DFM9.0 ± 0.78.5 ± 1.20.9 ± 0.78.7 ± 0.99.0 ± 1.61.2 ± 0.70.192
DFL9.1 ± 1.18.3 ± 1.61.4 ± 0.99.3 ± 1.68.4 ± 1.91.6 ± 1.00.292
PFM9.3 ± 0.69.9 ± 1.31.1 ± 0.98.8 ± 0.58.9 ± 1.81.4 ± 0.90.173
PFL7.8 ± 1.47.2 ± 1.51.3 ± 0.98.6 ± 1.27.3 ± 1.51.6 ± 0.80.062
TM2.5 ± 1.82.9 ± 1.01.1 ± 0.92.1 ± 1.32.7 ± 0.81.1 ± 0.90.902
TL10.0 ± 0.49.4 ± 1.31.3 ± 0.810.3 ± 0.79.5 ± 1.41.2 ± 0.80.730
  1. *The values are given as the mean and the standard deviation. paired t-test
  2. DFM Distal femoral medial side, DFL Distal femoral lateral side
  3. PFM Posterior femoral medial side, PFL Posterior femoral lateral side
  4. TM Tibial medial side, TL Tibial lateral side