Table 1.

Patient demographics.

Patients	40
Age	58 (range 30–81)
Gender	30 F (75%), 10 M (25%)
Symptoms	39 (98%) LBP
	24 (60%) buttock pain
	5 (13%) groin pain
Prior lumbar spine surgery	19 (48%) total 12 fusion, 3 decompression, 1 unknown, 2 discectomy, 1 spinal cord stimulator