18F-fluoride PET/CT as an early predictor of bony fusion after posterior lumbar interbody fusion– a prospective study

Table 4 P-values for the intraindividual differences within the pseudarthrosis group in SUVmax, Ki, K1/k2, k3/(k2 + k3) at six weeks and one year after PLIF for the operated rois versus the control rois and for the endplate rois versus the intervertebral rois. A red font was used to indicate p-values ≤ 0.05

	Comparison		6 WEEKS p-values				1 YEAR p-values
	Comparison		SUVmax	Ki	K1/k2	k3/(k2 + k3)	SUVmax	Ki	K1/k2	k3/(k2 + k3)
PSEUDARTHROSIS segments	operated ROIs vs. control ROIs	endUP vs. endUP_C	0.005	0.012	0.069	0.017	0.004	0.005	0.017	0.022
		inter vs. inter_C	0.005	0.003	0.005	0.008	0.003	0.003	0.004	0.008
		endLOW vs. endLOW_C	0.005	0.003	0.155	0.003	0.011	0.007	0.028	0.008
	endplate ROIs vs. intervertebral ROIs	endUP_C vs. inter_C	0.005	0.012	0.484	0.017	0.003	0.005	0.074	0.005
		endLOW_C vs. inter_C	0.005	0.003	0.003	0.008	0.003	0.003	0.003	0.003
		endUP_C vs. endLOW_C	0.284	0.484	0.208	0.327	0.594	0.005	0.059	0.012
		endUP vs. inter	0.022	0.003	0.959	0.109	0.008	0.003	0.286	0.051
		endLOW vs. inter	0.028	0.003	0.114	0.026	0.214	0.037	0.139	0.021
		endUP vs. endLOW	0.074	0.086	0.248	0.021	0.214	0.721	0.575	0.214

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