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TABLE 1: LESI procedures and initial needle tip position with loss of resistance as seen in the lateral projection
Initial Needle Tip Position # LESI Procedures % Adjacent to Spinal Canal Mid Spinous Process
Extracanal position 19 26 15 4
Epidural position 55 74 
    Total 74 100 15 (20.3%) 4 (5.4%)
Initial Needle Tip Position	# LESI Procedures	%	Adjacent to Spinal Canal	Mid Spinous Process
Extracanal position	19	26	15	4
Epidural position	55	74
Total	74	100	15 (20.3%)	4 (5.4%)