Effects of Lordotic Angle of a Cage on Sagittal Alignment and Clinical Outcome in One Level Posterior Lumbar Interbody Fusion with Pedicle Screw Fixation

Table 2

Segmental lordosis and total lumbar lordosis of both groups.

	Pre-op segmental lordosis	2 wk segmental lordosis	6-month segmental lordosis	1-year segmental lordosis	Pre-op total lordosis	2 wk total lordosis	6-month total lordosis	1-year total lordosis
PEEK (4)	12.9 (±7.6)	13.1 (±6.4)	12.6 (±6.5)	12.6 (±6.7)	38.9 (±15.2)	39.1 (±13.1)	40.7 (±14.7)	39.6 (±14.5)
PEEK (8)	12.0 (±7)	12 (±6.2)	12.3 (±6.5)	12.0 (±5.6)	39.7 (±14.5)	39.1 (±12.9)	43.0 (±13.7)	41.0 (±14.0)
value^*	0.493	0.744	0.278	0.943	0.973	0.754	0.330	0.263

By -test.