Table 1.

JOA scores at different follow‐up times

Groups	Preop	Postop	6 months	Last FU	JOA improvement (last FU‐preop)/(17‐preop)*100%	P value Last FU/Preop
Anterior	10.5 ± 2.5	11.3 ± 1.8	14.4 ± 1.9	15.5 ± 1.6	77.0 ± 21.3	<0.001
Posterior	9.5 ± 2.7	10.7 ± 2.0	14.1 ± 2.5	14.6 ± 1.7	68.1 ± 22.5	<0.001
P value	0.06	—	—	0.007	0.08	—

Note: FU, follow‐up. Values given as mean ± SD.