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 1

Patients’ demographics, symptoms, and treated levels.

(a)

Patients	Male	Female	Mean age
100	42	58	56 y

(b)

Symptoms	Yes	No
NIC	84	16
LBP	62	38
LP	47	53
Dist	74	26

NIC: neurogenic intermittent claudication; LBP: low back pain; LP: leg pain; Dist: disability.

(c)

Treated levels	Single level	90	58: L4-L5
			32: L3-L4
	Double level	10	9: L3-L4 + L4-L5
			1: L2-L3 + L4-L5