Table 2.

	Surgical Treatment	Follow-up
First Author, Year	Decompression or Decompression and Fusion	Patients (n)	Duration (Months)	Neurologic Deficits	Return to Work	Pain Free	Oswestry Disability Index <20%	Excellent Functional Outcome
Aagaard, 2013		94	3	26
Asamoto, 2005		21					11	11
Ascione, 2017		30	30	8		22	4	22
Bernard, 2015		283	12	10
Bettini, 2009	3	56	12
Butler, 2006				0
Bydone, 2014	118		15	23
Cebrian, 2012		108	6			35		35
Chung, 2014	20	20	36	4	20	20		20
Citak, 2011	102	183
D’Agostino, 2010	10	72						65
D’Aliberti, 2012	40	40	43	13		17		17
Eysel, 1997	55		42
Ha, 2007				1
Hadjipavlou, 2000	62	47		14
Heyde, 2006			37	3
Homagk, 2016
Hopf, 1998		72	38	1
Karadimas, 2008	93	163	12	22
Kaya, 2014							94	94
Klockner, 2003	71	71	64
Krodel, 1991			36
Legrand, 2001		99	3				42	42
Lemaignen, 2017	58	378	5	26
Lin CP, 2012	48	48	64		32		32	32
Lin TY, 2014	45	45	24
Lin Y, 2015	22	22	31	0			19	19
Lu, 2015	28	28	20	0	10		15	25
Mann, 2004		24			15			15
Nasto, 2014	12	27	9
Pee, 2008	60	60	36	5
Rath, 1996	45	41		15
Shinkel, 2003	32	20	49	10
Schomacher, 2014	37	37	20
Shiban, 2014	106		3	16
Shousha, 2012	30	27	28
Sobottke, 2009		11	13
Srinivasan, 2014		48
Suess, 2007	24	24	18
Tsai, 2017	43
Valancius, 2013	117	80	12			64		64
Vcelak, 2014	31	30	12				27	27
Wirtz, 2000		59	26
Yaldz, 2015	12	39	96	1
Ziu, 2014	24	66	7