Cryoablation of osteoid osteomas: Is it a valid treatment option?

Figure 1 Eighteen-year-old female-osteoid osteoma of the medial malleolus (tibia). A: Coronal T2WI image reveals 1 cm lesion of the medial malleous in close proximity to the skin and the ankle joint; B: Computed tomography image demonstrates a lytic lesion with reactive sclerosis. The lesion was biopsied and confirmed as an osteoid osteoma; C: Cryoablation procedure: Cryoprobe placement inside the nidus and a spinal needle in the joint for active warming during the procedure. Skin was hydrodissected with a mixture of saline and local anesthetic and a warm glove was applied for protection.