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Table 3 Postoperative clinical outcomes

From: The effect of local injection of tranexamic acid into peri-articular tissue versus drain clamping in total knee arthroplasty: a randomized controlled trial

Outcomes

Group L

Group D

P value

CTBL (ml)

883 ± 248

841 ± 257

0.564

DBL (ml)

395 ± 130

276 ± 78.8

<  0.0001

HBL (ml)

488 ± 269

565 ± 261

0.1315

D-dimer (μg/ml)

6.50 ± 2.80

5.93 ± 2.71

0.285

NRS at POD 5

1.96 ± 2.45

2.65 ± 2.70

0.195

NRS at POD 10

1.81 ± 2.32

2.54 ± 2.56

0.131

ROM at POD 14

 Extension (°)

−0.93 ± 2.32

−1.59 ± 2.92

0.284

 Flexion (°)

106 ± 15.1

106 ± 14.3

0.886

Circumference of the leg

 Thigh girth at POD 5 (%)

107 ± 4.80

107 ± 5.25

0.84

 Suprapatellar girth at POD 5 (%)

109 ± 4.74

109 ± 4.39

0.556

 Calf girth at POD 5 (%)

102 ± 3.96

103 ± 5.11

0.575

 Thigh girth at POD 10 (%)

104 ± 4.11

103 ± 4.32

0.77

 Suprapatellar girth at POD 10 (%)

107 ± 5.44

106 ± 4.34

0.67

 Calf girth at POD 10 (%)

101 ± 4.75

101 ± 7.15

0.79

  1. Values are given as the mean and the standard deviation
  2. CTBL indicates calculated total blood loss. DBL Drained blood loss, HBL Hidden blood loss, NRS Numerical rating scale, POD Postoperative day, ROM Range of motion
  3. Significance was accepted with a one-sided p-value < 0.025 for the CTBL and with a two-sided p-value < 0.05 for the secondary outcome measures