Table 3.

Clinical results for Group SO and Group P/T.

	Group SO	Group P/T	p-Value
Number of patients	63	35
VAS of back pain	5.6 ± 2.4	6.0 ± 2.9	0.578
ODI	45.4 ± 17.7	55.4 ± 19.7	0.142
Complication	6.3%	14.1%	0.191
Neural injury	2	0
Dural tear	0	2
SSI	1	0
Hematoma	0	2
Reoperation	1	1

ODI: Oswestry Disability Index; VAS: visual analogue scale; SSI: surgical site infection.