Table 1

Bone graft types used for revision posterior fusion.

Type of Secondary PSF	Bonegraft Type	n	Age, y, Mean ± SD	No. of Levels Fused, Median (Range)	Smokers No. (%)	Supplement Treatment		Solid PSF No. (%), Mean mo to CT^{^c}
Type of Secondary PSF	Bonegraft Type	n	Age, y, Mean ± SD	No. of Levels Fused, Median (Range)	Smokers No. (%)	BMP No. (%)	Internal Bone Growth Stimulator No. (%)	Solid PSF No. (%), Mean mo to CT^{^c}
Pseudo repair	RIBG^a	7	53.7 ± 12.8	1 (1–6)	5 (71%)	6 (86%)	4 (57%)	7 (100%), 8.4 mo
	IBG^{^b}	17	49.7 ± 17.0	1 (1–4)	7 (41%)	0 (0%)	5 (29%)	12 (71%), 11.6 mo
	BMP	22	56.6 ± 17.1	1 (1–3)	10 (45%)	22 (100%)	10 (45%)	18 (82%), 11.3 mo
	IBG + BMP	8	55.4 ± 15.6	1 (1–3)	4 (50%)	8 (100%)	5 (63%)	7 (88%), 12.3 mo
	Local autograft	6	58.3 ± 15.9	1 (1)	3 (50%)	0 (0%)	2 (33%)	3 (50%), 8.6 mo

Extension of PSF	RIBG^{^a}	10	56.5 ± 3.6	2 (1–6)	6 (60%)	4 (40%)	2 (20%)	9 (90%), 15.2 mo
	IBG^{^b}	19	56.5 ± 9.1	1 (1–3)	8 (40%)	0 (0%)	5 (29%)	15 (79%), 24.2 mo
	BMP	56	60.5 ± 15.0	1 (1–7)	19 (34%)	56 (100%)	12 (21%)	44 (79%), 12.5 mo
	IBG + BMP	1	52.6	1 (1)	1 (100%)	1 (100%)	1 (100%)	1 (100%), 29.2 mo
	Local autograft	4	53.8 ± 12.2	1 (1)	1 (25%)	0 (0%)	1 (25%)	4 (100%), 8.9 mo

Abbreviations: BMP, bone morphogenetic protein; CT, computed tomography; IBG, Iliac bone graft; PSF, posterior spinal fusion; RIBG, reconstructed iliac bone graft.
↵a Study group.
↵b Outcomes control group.
↵c No significant difference in fusion rate between RIBG and IBG and BMP (P = 0.26).