Percutaneous CT Guided Radiofrequency Ablation (RFA)


Percutaneous CT Guided Radiofrequency Ablation (RFA) is currently the “Gold standard treatment” of Osteoid Osteoma

Radiofrequency Ablation’ (RFA) minimally invasive procedure.

How is RFA performed?

  • Day Care basis
  • Under local anesthesia and/or general anesthesia
  • Diagnosis of Osteoid osteoma is confirmed under the CT scan.
  • Small Scar (Similar to Core Needle Biopsy)
  • In a percutaneous manner, Core needle biopsy is done under CT.
  • RFA probe is inserted into the nidus and the area is burned by high temperature of 80-90 degree Celsius for 2-3 minutes under controlled environment.
  • In situations of deep seated lesion or exuberant periosteal reaction, a drill is used to enter the nidus.
  • The damage to surrounding bone is minimal.
  • The individual can resume normal activities the same day with 95 % pain relief.

What is the recurrence rate of RFA?

  • The risk of recurrence has been documented as 3-10 %.
  • The recurrence is attributed to long nidus (greater than 10 mm) or wrong localization of the nidus or residual disease.

Can all osteoid osteomas be treated by RFA?

  • Long nidus (>10 mm) may need multiple RFA or be surgical removal
  • Spinal osteoid osteomas are not suitable for this technique due to the closeness of vital structures.
  • Juxt-articular osteoid osteomas may be treated with caution due to resulting effusion and joint inflammation.


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  • Apollo Cancer Center
    Apollo Hospitals, Bengaluru

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