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Table 3 Results for postoperative measurements in both groups

From: Extramedullary versus intramedullary tibial cutting guides in megaprosthetic total knee replacement

Postoperative measurements in coronal view
  Extramedullary Intramedullary Significance
Mean TCA1 +/− S.D. in degrees −1.18 +/− 2.40 −0.34 +/− 2.31 p = 0.06
Number of X-rays within optimal range (percentage) 35 (54) 18 (67) p = 0.25
Number of X-rays within valgus alignment (percentage) 16 (25) 12 (44) p = 0.07
Mean error Δ in degrees 0.05 0.04 p = 0.65
Number of X-rays tends to 200 leg rotation (percentage) 19 (29) 9 (33) p = 0.70
Postoperative measurements in sagittal view
  Extramedullary Intramedullary Significance
Mean TCA2 +/− S.D. in degrees 2.09 +/− 2.40 0.50 +/− 3.28 p = 0.01
Number of X-rays within optimal range (percentage) 51 (78) 17 (63) p = 0.16
Number of X-rays within posterior slope (percentage) 57 (88) 18 (67) p = 0.03
Mean error Δ in degrees 0.07 0.05 p = 0.46
Number of X-rays tends to 200 leg rotation (percentage) 25 (38) 13 (48) p = 0.38
  1. TCA1: error in tibial component angle measured in coronal view.
  2. TCA2: error in tibial component angle measured in sagittal view.
  3. S.D.: Standard Deviation.
  4. Error Δ: Angular error in measurements (θ) of TCA1/TCA2 occurring due to knee rotation (Ф).
  5. Statistical significances were set at p < 0.05.