Comparison of bone reamer and trephine for foraminoplasty in percutaneous endoscopic lumbar discectomy based on 3D slicer and Digimizer software

Table 4 Relationship between the number of fluoroscopy and the area of the FPZ

Indicators	Group-R	Group-T	T value	P value
Overall number of fluoroscopy	20.52 ± 5.38	13.25 ± 3.06	19.003	0.001
Preoperative FPZ ≥ 54.55mm²	15.77 ± 1.74	11.64 ± 2.41	0.738	0.398
Preoperative FPZ < 54.55mm²	23.94 ± 4.39	14.50 ± 2.98	88.337	0.010
T value	14.443	0.571
P value	0.001	0.456

ISSN: 1749-799X