Table 1

Perioperative variables		%
Anesthesia	General	90.7
Anesthesia	Spinal	9.3
Surgical positioning	Flexed	56.7
	Knee-Chest	35.1
	Simple prone	8.2
Fluoroscope use	Yes	90.7
Fluoroscope use	No	9.3
Retractor use	Caspar	68
	Taylor	20.6
	Williams	11.4
Microscope or loupes	Yes	82.5
Microscope or loupes	No	17.5
Local anesthetics	No	32
	Pre-op	45.3
	Post-op	18.6
	Pre + Post	4.1
Periradicular Gcs	Yes	23.7
Periradicular Gcs	No	76.3
Day of mobilization	0	23.7
Day of mobilization	>0	76.3
Prolonged hospitalization days after durotomy	0	25.8
	1	59.8
	>1	14.4
Day of discharge	1	25.8
	2	66
	>2	8.2
Days of corset prescription	0	75.3
	15	11.9
	30	7.2
	>30	5,6
GCs prescription	Yes	46.4
GCs prescription	No	53.6
Opioids and/or NSAIDs prescription	Yes	7.2
Opioids and/or NSAIDs prescription	No	92.8
Neurotrophic drugs prescription	Yes	11.3
Neurotrophic drugs prescription	No	88.7
Physiotherapy beginning day	Never	50
	15	6.1
	30	43.9
Follow-up visit	1 mo	65
	3 mo	10.3
	on request	24.7