Table 3.

Clinical outcomes

	Preoperative	3 months	6 months	1 year	2 years
ODI	49.9 ± 15.4	29.4 ± 18.0	22.0 ± 16.8	22.4 ± 16.1	23.0 ± 18.7
COMI	7.8 ± 1.4	4.0 ± 2.6	3.0 ± 2.3	3.1 ± 2.4	3.1 ± 2.4
Back pain (VAS)	63.5 ± 22.1	31.7 ± 23.4	23.6 ± 21.9	22.0 ± 22.1	28.4 ± 26.2
Leg pain (VAS)	63.2 ± 22.0	23.9 ± 24.9	23.9 ± 24.9	21.5 ± 23.6	25.3 ± 25.8
Satisfaction (VAS)	-	79.6 ± 24.5	83.8 ± 22.6	85.4 ± 19.1	77.5 ± 27.0

All values expressed as mean ± standard deviation; Abbreviations: ODI, Oswestry Disability Index; COMI, Core Outcome Measures Index; VAS, Visual Analog Scale