Table 4

Lordosis and posterior disc height on computed tomographic images.

Time	Segmental Lordosis, °	Lumbar Lordosis, °	Posterior Disc Height, mm
Preop	8.2 ± 4.1	41.0 ± 11.2	3.2 ± 1.6
Postop^{^a}	10.6 ± 2.9	43.1 ± 8.4	6.0 ± 1.7
Fusion^{^b}	10.4 ± 4.1	43.2 ± 11.0	5.9 ± 1.5
P (preop vs postop)	0.0078	0.3921	<0.0001
P (preop vs fusion)	0.0330	0.4238	<0.0001
P (postop vs fusion)	0.8198	0.9670	0.8008

Abbreviations: postop, postoperative; preop, preoperative.
Note: Data are mean ± SD.
↵a At 6 wk postoperatively.
↵b At the time of fusion (6 or 12 mo postoperatively).