Table 1.

Details From The Manuscripts Used in This Review.

Author	Year	Country	Research Support From Companies	No. of Patients	No. of Levels	Mean Age (Years)	Mean BMI (kg/m2)	Gender	Average Operation Time (Minutes)	Length of Stay	Blood Loss	Follow-up (Months)	Diagnosis
Alimi et al7	2014	USA	No	90	145	64.4	27.6	55 F/35 M	NR	4.5 days	NR	3-50.4m	DDD (32); spondylolisthesis (24); degenerative scoliosis (22); adjacent segment disease (7); post-laminectomy syndrome (3); instrumentation failure/non-fusion (2)
Malham et al5	2014	Australia	No	52	79	66.4	26.1	34 F/18 M	NR	NR	NR	NR	Spondylolisthesis(14); DDD (20); scoliosis (12); stenosis (2); herniated nucleus pulposus (3); adjacent segment disease (1)
Dominguez et al17	2017	Spain	No	97	138	68	NR	NR	35 mL per level (+57 if additional fixation)	3.2 days	40 mL per level	12-44	Adjacent segment disease (30%); deformity (11%); lumbar disc disease (21%)
Marchi et al11	2011	Brazil	No	52	52	67.6	27.4	38 F/14 M	73.2 mL per level	NR	<50 mL per level	24	Low-grade spondylolisthesis
Grimm et al18	2017	USA	No	108	193	59	NR	71 F/37 M	151 mL (1 level); 174 mL (2 levels); 253 mL (>2 levels)	3 days	268 ± 88	12	Degenerative scoliosis (33); DDD (27); degenerative spondylolisthesis (24); stenosis(12); recurrent disc herniation (6); post-laminectomy syndrome (6)
Phillips et al19	2013	USA	NuVasive	107	344	68	NR	78 F/29 M	57.9 mL per level	2.9 days	<100 mL	24	Degenerative scoliosis
Wang et al12	2017	USA	No	45	101	65	NR	31 F/14 M	NR	NR	NR	6	Revision (4); spondylosis (29); DDD(4); adjacent segment disease (1); instability (3); trauma (1); scoliosis (24); central canal stenosis (37)
Khajavi et al20	2015	USA	NuVasive	60	71	64.5	29.1	45 F/15 M	206 mL (per case)	1.3 days	83 mL	20.3	Degenerative spondylolisthesis: Grade I (47); Grade II (13)
Oliveira et al21	2010	USA	NuVasive	21	43	67.6	NR	14 F/7 M	47 mL per level	1.2 days	23 mL per level	NR	Degenerative spondylolisthesis (8); degenerative scoliosis (19)

Abbreviations: F, female; M, male; BMI, body mass index; DDD, degenerative disc disease.