Cortical Bone Trajectory Screws in Posterior Lumbar Interbody Fusion: Minimally Invasive Surgery for Maximal Muscle Sparing—A Prospective Comparative Study with the Traditional Open Technique

Table 2

Radiological outcomes.

Radiological outcomes	CBT-PLIF	PS-PLIF	value
Fusion (12 mo FU)	18/2	17/3	0,3292
Superior facet joint violation	1,25%	8,75%	0,0635
Subsidence (12 mo)	19/1	18/2	0,3846
Pull out (% at 12 mo)	0%	0%	1,0000
MF-CSA % change at 12 mo	16,76%; (SD 14,17%)	24,59%; (SD 9,68%)	0,0483
T2 ratio % change at 12 mo	9,35%; (SD 12,71%)	23,96%; (SD 15,99%)	0,0028