Table 1 Demographic and clinical information of the patients

Total patient number

23

Gender

 Male

13

 Female

10

Average age (range)

51 (17–71)

 Smoking history

4

 Comorbidity

 Diabetes mellitus

4

 Obesity (BMI > 28)

2

 Hypertension

7

 Osteoporosis (T score < − 2.5)

5

 Immune system disorder

1*

Site

 Thoracic

3

 Thoracolumbar

13

 Lumbar

7

Vertebra involved

 Two vertebrae

20

 Three vertebrae

3

ASIA grading

 ASIA C

2

 ASIA D

5

 ASIA E

16

VAS

7.5(5–9)

Average CRP mg/L (range)

30.6(15.1–55.8)

Average ESR mm/h (range)

72.3(45–120)