This is a 15-years old boy with a posterior tibial mid-diaphyseal osteoid osteoma. A radiofrequency ablation (RFA) procedure was performed.
The approach was through the anterior cortex to avoid potential injury to other structures with posterior or lateral approaches. The electrode was placed in the lesion (Figs. 1, 2) and the ablation was performed at 90 deg C for 5 minutes.
A repeat MRI performed a week later shows the tract well (Fig. 3) as well as the zone of ablation (arrow).
RFA is the method of choice for treating osteoid osteomas. The results compare very favorably with surgery, but with hardly any associated morbidity. Since the procedure is performed under deep sedation in an OPD /day care setting, the patient is ready to resume a normal routine within 24 hours.
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