3:09 PM Abstract No. 251 Osteoid osteoma treated with radiofrequency ablation in non–operating room anesthesia: our experience in 61 cases

Abstract

The purpose of this study is to verify the effectiveness and complications occurrence of radiofrequency ablation (RFA) in the treatment of osteoid osteoma (OO) in non–operating room anesthesia (NORA). From 2013 to 2016, 61 patients affected by OO (40 men and 21 women) with an age of 20.7 years on average (range, 4-51 years; 12 Patients aged 20 years or younger) underwent computed tomography–guided percutaneous radiofrequency ablation (RFA) in NORA. Lesion sites treated were: femur (27), tibia (22), pelvis (2), talar bone (3), distal radius (1) and humerus (6). Mean follow-up time was 36 months. RFA was performed under conscious sedation. In each case, anesthesiologic support followed a new protocol (NORA), approved from our Institute. Primary success rate, complications, symptom-free intervals and follow-up results were evaluated. Pain relief was significant in 97% of patients; it disappeared within 24 hours after procedure in 44 Patients, within 3 days in 10 patients, and within 7 days in 7 patients. Within 36 months observation time, 60 of 61 patients were successfully treated and had no more complaints. In 2 patients, two major complications were found: infection of the site treated, healed with antibiotics, and a nervous lesion, healed with steroid therapy. No other complications were observed. RFA is a highly effective, efficient, minimally invasive and safe method for the treatment of OO after the NORA protocol.