2249. Radiofrequency Ablation in Osteoid Osteomas of Typical and Atypical Presentations
Authors * Denotes Presenting Author
  1. Vineel Inampudi *; Pinnamaneni Siddhartha Institute of Medical Sciences
To evaluate technical, clinical success and complications of radiofrequency ablation in osteoid osteomas with typical and atypical presentations

Materials and Methods:
We Prospectively reviewed 280 patients (age range: infant to 40 years) in whom radiofrequency ablation (RFA) was performed between October 2015 and April 2020 for osteoid osteomas with typical and atypical presentations. Atypical presentations included atypical sites like clavicle, talus, cervical vertebra, acetabulum and in atypical age like infants. Following preprocedural evaluation and imaging, all patients underwent RFA of osteoid osteomas under CT guidance. We evaluated for technical success of the procedure, pain relief, recurrence and any complications of the procedure. The procedure was done using RITA equipment.

Technical success was achieved in all patients, with intranidal localization of the needle and complete ablation. Successful pain relief was achieved in all patients within 1 day to 1 week. Immediate complications included a 5 cases of minor thermal skin burn of about 1cm which subsided on its own. Another 7 patients with osteoid osteoma of proximal shaft of left femur developed pain in the lateral aspect of lower half of thigh following radio frequency ablation which subsided in two weeks. During follow up, 8 patients developed recurrence after 6 months which was treated with repeat RFA.

Radiofrequency ablation is a relatively safe, minimally invasive, and effective method for the management of osteoid osteomas with few complications.