Table 1.

General information of the two groups.

Characteristics	Robot-RFA (n = 24)	CT-RFA (n = 38)	p-value
Age (years)	13.83 ± 7.23	16.58 ± 8.20	0.18
Gender (male/female)	11/13	17/21	0.60
Lesion localization			0.39
Femur	11	21
Tibia	6	12
Fibula	3	2
Humerus	2	3
iliac	2	0
Lesion size (mm)	5.30 ± 1.23	5.14 ± 1.00	0.59
Preoperative VAS	7.17 ± 0.92	7.05 ± 0.98	0.63
Follow-up time (months)	22.00 ± 7.11	24.10 ± 6.40	0.23

Robot-RFA, Robot-assisted, O-arm-navigated radiofrequency ablation; CT-RFA, CT-guided radiofrequency ablation; VAS, visual analog scale.