CT Guided Radiofrequency Ablation of Osteoid Osteoma.

Aim: To evaluate the therapeutic efficacy of CT Guided Radio Frequency ablation of benign bone tumour- Osteoid osteoma. Materials and Method: 1. Study group: Patients who presented with typical history and were clinically diagnosed as Osteoid osteoma were subjected to radiological evaluation. The patients graded their pain at day and night on a visual analogue scale between Grade 0-No pain and Grade 10-Unbearable pain. We evaluated 16 patients of Osteoid osteoma in whom Radio Frequency Ablation (RFA) was performed between November 2015 and October 2016. The lesions were located in the femur (n = 10), tibia (n = 5) and fibula (n=1). 2. Study design: Prospective Interventional study 3. Method: MDCT guided RFA procedure was performed using a STAR med VIVA RF Generator and cooled tip probe standard technique under spinal anesthesia. Results: Significant pain relief was observed in 15 out of 16 patients on first week post-operative visual analog scale. Immediate complications included a case of minor thermal skin burns in 3 patients, which healed on its own. There were no delayed complications. The average follow-up period was 2-3 months. One patient (6.25%) had persistent pain even after one month, following ablation which was due to residual lesion. Complete pain relief was achieved after a second ablation in that case. Thus, our primary and secondary clinical success rates were 93.8% and 100%, respectively. Conclusion: RFA is a safe, quick, minimally invasive, and extremely effective method for the management of Osteoid osteomas. [ABSTRACT FROM AUTHOR]