Intraoperative Myelography in Transpsoas Lateral Lumbar Interbody Fusion for Degenerative Lumbar Spinal Stenosis: A Preliminary Prospective Study

Table 2

Radiological measurements before operation and after operation.

	Before operation	After operation	value
SR (anterior-posterior)	(26.1 ± 24.1)%	(84.2 ± 12.1)%	0.000
SR (lateral)	(33.1 ± 31.8)%	(81.1 ± 12.9)%	0.005
Transverse dural sac area (cm^2)	0.65 ± 0.22	1.41 ± 0.39	0.000

SR: stenosis ratio.