Comparison of Fusion Rates between Glycerol-Preserved and Frozen Composite Allografts in Cervical Fusion

Table 1

Fusion rates by numbers of patients^*.

	Frozen				Glycerol-preserved				Frozen versus glycerol; statistically similar?
	Total; patients	Fused; grafts	Not fused	% of fused; patients	Total; patients	Fused; grafts	Not fused	% of fused; patients
Three months	38	16	22	42.1%	29	11	18	37.9%	Yes
12 months	24.5	24.5	0	100%	17.5	17.5	0	100%	Yes

Note that 2 patients had both glycerol-preserved and frozen grafts, 1 level for each type. The results from those patients were counted as 1/2 patients in each group.