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Table 2 Comparison of surgical data

From: Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis

 

Conventional group (n = 109)

Novel technique group (n = 109)

P

Operation time (min)

75.52 ± 18.59

62.14 ± 9.94

< 0.001

Tourniquet time (min)

49.29 ± 13.46

36.29 ± 7.29

< 0.001

Length of hospital stay (day)

8.72 ± 1.12

8.40 ± 1.69

0.017

Mean intraoperative bleeding (mL)

201.10 ± 42.43

190.73 ± 52.08

0.109

Mean Hb decrease day 1 (g/L)

17.59 ± 8.67

19.50 ± 9.72

0.126

Mean Hb decrease day 3 (g/L)

33.61 ± 11.41

35.46 ± 13.88

0.285

  1. The t test was used for all