New Technique for Treatment of Benign Bone Lesion Using O Arm Navigated System

Objective: To evaluate the use of navigated system based on O arm technology in the treatment of bone lesions mainly radiofrequency ablation of osteoid osteoma and other benign bone lesions.

Materials and Methods: during the year 2015, altogether 34 patients underwent thermal ablation of bone lesions at our institution. To access the lesion the surgical instruments were guided by O arm assisted navigation system. Procedure time, amount of scans, radiation exposure, and the clinical results were investigated.

Results: The navigated system was accurate in all cases and needle tip was in place verified in the second scan in all cases. The radiation exposure was decrease by an average of 33% as compare to conventional CT procedures. 33 of the 34 patients reported complete pain reduction within 48 hours after the procedure.

Conclusions: The use of the navigated system based on O arm scans was feasible and facilitated the access to the bony lesions with significantly reduction in radiation exposure to the patient and staff.