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Table 2 Objective measures

From: Different patient satisfaction levels between the first and second knee in the early stage after simultaneous bilateral total knee arthroplasty (TKA): a comparison between subjective and objective outcome assessments

Variable First knee Second knee p value
Tourniquet time (min) 85.3 ± 11.3 84.4 ± 10.2 0.352
Drainage volume (mL) 136.82 ± 30.76 433.18 ± 59.55 <0.001
Circumference 10 cm from the upper edge of the patella (cm)
 Preoperative 45.47 ± 2.26 45.36 ± 2.30 0.247
 Postoperative day 1 49.83 ± 2.33 47.60 ± 2.50 <0.05
 Postoperative day 3 48.15 ± 2.35 45.42 ± 2.30 <0.05
 Postoperative day 7 46.25 ± 2.37 45.76 ± 2.34 <0.05
  1. Data are presented as the mean ± SD