Table 3.

Kyphotic angles at instrumented fusion levels

Case no.	Instrumented fusion levels/(no. of discs)	Preop. kyphotic angle (°)			Spinal mobility (°)	Spinal mobility per disc (°)	Postop. kyphotic angle (°)
		Supine position	Prone position	Sitting position
19	T6–L2/(8)	15	23	25	10	1.3	23
20	T1–T10/(9)	27	32	35	8	0.9	32
21	T1–L1/(12)	40	47	51	11	0.9	49
22	T1–T10/(11)	23	26	34	11	1.2	32
23	T2–T10/(8)	30	37	40	10	1.3	38
24	T1–T11/(10)	25	33	45	20	2.0	37
Average ± SD		26.7 ± 1.3	33.0 ± 8.5	38.3 ± 9.1	11.7 ± 4.2	1.3 ± 0.4	35.2 ± 8.6

Spinal mobility = Preop. kyphotic angle in sitting position − preop. kyphotic angle in supine position