One-Year Follow-Up of a Series of 100 Patients Treated for Lumbar Spinal Canal Stenosis by Means of HeliFix Interspinous Process Decompression Device

Table 2

Summery of patients’ outcomes.

	Pretreatment	Posttreatment
Mean VAS	8	4
Mean R-M	16	9
LBP	62	Abolished: 25
		Improved: 32
		Unchanged: 2
LP	47	Abolished: 18
		Improved: 32
		Unchanged: 4
NIC	84	Abolished: 29
		Improved: 37
		Unchanged: 8
PSI	/	Satisfied: 66
		Quite satisfied: 26
		Nonsatisfied: 8

VAS: visual analogic scale; R-M: Roland-Morris disability questionnaire; LBP: low back pain; LP: leg pain; NIC: neurogenic intermittent claudication; PSI: patients satisfaction index.