Table 2 Perioperative details

Mean operative time (min)

98.5 ± 10.7

65.9 ± 7.3

< 0.05

Mean Blood loss (ml)

17.5 ± 7.2

18.2 ± 9.1

0.728

Mean VAS Score at:

 12 h after surgery

4.2 ± 0.9

6.7 ± 1.0

< 0.05

 24 h after surgery

2.6 ± 0.9

4.6 ± 0.8

< 0.05

 7 day after surgery

0.4 ± 0.5

0.8 ± 0.6

< 0.05

Dosage of Tramadol after surgery (mg)

25.0 ± 37.0

72.6 ± 40.5

< 0.05

Mean length of stay after surgery (days)

Total hospital expenses (CNY)

Postoperative complications

1.2 ± 0.5

19695.9 ± 1221.7

1 Subcutaneous fluid

2.2 ± 0.6

35286.2 ± 1196.5

-

< 0.05

< 0.05