Table 3.

Alteration of the local kyphosis angle at the affected vertebra

Case no.	Local kyphosis angle (°)
	Before surgery		Immediately after surgery	Six months after surgery	Final follow-up
	Flexion	Extension
1	21	9	10	18	18
2	0	−18	−10	−4	−3
3	19	11	8	15	16
4	25	19	25	28	28
5	6	−1	0	10	10
6	18	5	10	13	14
7	5	−6	−8	−5	−5
8	11	3	0	4	4
9	0	−7	−7	−5	−5
10	28	18	18	18	17
11	40	27	29	30	30
12	11	3	5	5	6
13	15	2	6	6	6
14	9	−8	−5	0	2
Mean ± SD	14.6 ± 11.2	4.1 ± 12.1	5.8 ± 12.0	9.5 ± 11.5	9.9 ± 11.3