Table 3.

Vertebral body angle (VBA), local kyphotic angle (LKA), and sagittal index (SI) (average degrees, minimum to maximum)

	Pre-op	Post-op	Pre-removal	Latest
VBA	20.3 [4.7–37.8]	2.6 [−5.4 to 13.3]	4.6 [0–18.4]	7.7 [0–21.6]
Local kyphotic angle	18.9 [4.5–39.3]	0.5 [−8.3 to 15.3]	3.3 [−4.5 to 16.4]	10.2 [4–19.2]
Sagittal index	18.9 [0–35.9]	2.1 [−12.1 to 16.6]	4.1 [−10.5 to 18.6]	9.8 [−10 to 24.9]