Table 1. Clinical characteristics of the 64 patients who underwent robot-guided pedicle screw placement.

Numbers	64
Age (years)	65.56±13.31 (20–89 y/o)
Gender(M/F)	14/50
BMI	25.58±4.66
No of pedicle screws	317
Op time(min)	38.47±14.98
Intraoperative X-ray (spot film)	6.33±2.85