Table 2 Clinical outcomes

Operation time (min)

109.1 ± 24.7

140 ± 26.3

Blood loss (ml)

155.6 ± 17.3

185.6 ± 21.8

Hospital day (d)

5.97 ± 0.99

6.10 ± 0.98

Drainage (ml)

58.5 ± 6.76

62.1 ± 10.71

mJOA score

Preoperative

7.93 ± 1.9

7.87 ± 2.1

Immediate postoperative

13.27 ± 0.7

13.56 ± 0.6

3 months postoperative

14.62 ± 1.1^#

14.38 ± 0.9^#

Final follow-up

14.58 ± 0.8^#

14.10 ± 1.2^#

Recovery rate of mJOA score (%)

65.12 ± 7.1

66.20 ± 5.9

NDI

Preoperative

17.19 ± 4.7

17.21 ± 5.3

Immediate postoperative

14.54 ± 5.2

14.76 ± 4.7

3 months postoperative

10.78 ± 4.16^#

11.09 ± 5.23^#

Final follow-up

9.88 ± 7.4^#

9.69 ± 7.7^#

VAS

Preoperative

6.17 ± 1.8

6.31 ± 2.1

Immediate postoperative

4.33 ± 1.38

4.25 ± 1.29

3 months postoperative

4.08 ± 0.99^#

4.19 ± 1.76^#

Final follow-up

3.58 ± 2.43^#

3.49 ± 1.95^#

Odom’s criteria

Excellent and good rate

93.5% (29/31)

(91.7%) 33/36

Dysphagia

 < 3 months

6.5% (2/31)

13.9% (5/36)

 > 3 months

0

8.3% (3/36)

Severe

0

3

Moderate

2

2

Mild

0

0