The Therapeutic Evaluation of Spinal Canal Decompression by Using the TBEIS Technique in the Treatment of Lumbar Spinal Stenosis

Table 4

Walking distance.

Outcome (meters)	Preoperation	Postoperation	value
<50	9	0	<0.01
>50 and <500	26	2	<0.01
>500	0	33	<0.01