Study Design: Compare the effectiveness of two different techniques for the management of osteoid osteoma of the spine.
Objective: To describe the technique, feasibility, and indications of two different minimally invasive surgical methods for the treatment of osteoid osteoma of the spine.
Summary Of The Background Data: Current treatment of osteoid osteoma of the spine is usually conventional surgical excision. The successful treatment of osteoid osteoma of the appendicular skeleton by percutaneous radiofrequency probe ablation is known; however, there have been only a few cases reported utilizing this method to treat osteoid osteoma of the spine. The high success rate of percutaneous transpedicle vertebral biopsy and diskectomy led us to believe this technique can also be applicable for the treatment of osteoid osteoma of the spine.
Methods: Two patients with symptomatic osteoid osteoma of the spine underwent two different surgical managements with local anesthesia. In one patient, the osteoid osteoma was localized in the apex of the right L4 superior articular process joint. Under computed tomography guidance he underwent radiofrequency coagulation with the use of a radiofrequency generator at 90 degrees for 240 seconds. The lesion in the second patient was located in the right pedicle of the T9 vertebra close to the exiting nerve root and was cored out by means of a special percutaneous instrument designed for percutaneous biopsy under fluoroscopic guidance.
Results: Both patients experienced immediate relief of pain, resumed their regular activities, and also remained free of symptoms after the 2.5- and 3-year follow-up.
Conclusion: Minimally invasive surgery can successfully be applied in the treatment of osteoid osteoma of the lumbar spine. When the nidus is not adjacent to the neural elements radiofrequency thermal ablation can be an effective and safe treatment of osteoid osteoma in the spine.
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