Table 4 Postoperative swelling ratio and complications

Swelling ratio (%)

 Postoperative day 1

103.2 ± 1.6

103.4 ± 2.1

0.625^a

 Postoperative day 2

105.1 ± 2.1

104.9 ± 2.1

0.631^a

 Postoperative day 3

105.1 ± 2.3

104.3 ± 1.8

0.058^a

Postoperative complications

 Nausea

12 (26.7%)

9 (20.0%)

0.455^b

 Vomiting

10 (22.2%)

6 (13.3%)

0.270^b

 Wound complications

5 (11.1%)

3 (6.7%)

0.711^c

 Chronic pain

6 (13.3%)

2 (4.4%)

0.266^c

 Nerve damage

0 (0)

0 (0)

 Postoperative infection

0 (0)

0 (0)

 Venous thrombotic events

0 (0)

0 (0)

 Significant decrease of quadriceps strength

0 (0)

0 (0)

 Fall after surgery

0 (0)

0 (0)

 3-month mortality

0 (0)

0 (0)

 3-month readmission

0 (0)

0 (0)