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Table 1 Basic information and clinical parameters

From: Accuracy and safety of robot-assisted cortical bone trajectory screw placement: a comparison of robot-assisted technique with fluoroscopy-assisted approach

Variable Total (n = 376) RG (172) FH (204) P
Patients (n) 81 37 44  
Sex     0.778
 Male   14 18  
 Female   23 26  
Mean age (years) 63.65 ± 10.50 64.86 ± 9.70 62.64 ± 11.13 0.344
Mean BMI (kg/m2) 26.48 ± 4.38 25.99 ± 4.20 26.90 ± 4.53 0.355
Screws (n) per case 4.64 ± 0.94 4.65 ± 0.95 4.64 ± 0.94 0.954
Time for single screw Placement 6.49 ± 1.33 5.58 ± 1.22 7.25 ± 0.84 P < 0.001*
Intraoperative blood Loss (ml) 262.10 ± 109.29 248.65 ± 97.53 273.41 ± 118.20 0.313
Radiation time (min) 0.41 ± 0.10 0.37 ± 0.10 0.43 ± 0.07 0.001*
Revision 3 0 3 0.108
Complications
 Infection 4 1 3 0.401
 Neurological injury 0 1 3 0.108
  1. RG Robot-Assisted, FH Free-Hand
  2. *P < 0.05. Statistically significant differences between the two groups