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Table 2 Radiological parameters. SVA (Sagittal Vertical Axis)

From: Understanding the pros and cons of spine surgery for ankylosing spondylitis: experience from a single institution study

 

Minimum

Maximum

Mean

 

Std. Deviation

Thoracic Kyphosis

25

115

72.45

 

22.545

LL

-18

26

9.00

 

25.803

Pre-op SVA

79

331

179.35

 

75.816

Post-op SVA

9

210

65.80

 

50.104