Percutaneous radiofrequency ablation of osteoid osteoma using cool-tip electrodes without the cooling system.

Abstract

PURPOSE:

The aim of this study was to evaluate the efficacy of percutaneous radiofrequency ablation (RFA) for osteoid osteoma (OO) using cool-tip electrodes without the cooling system.

MATERIALS AND METHODS:

A total of 17 patients (13 males, 4 females; mean age 19.1 years; range 7-49 years) with OO (tibia, n = 7; femur, n = 5; acetabulum, n = 2; radius, n = 1; talus, n = 1; lumbar spine, n = 1) underwent RFA. Using a cool-tip electrode without the cooling system, the lesion was heated to 90°C for 4 or 5 min. Procedures were considered technically successful if the electrode was placed into the nidus and the target temperature was reached and maintained for at least 4 min. Clinical success of the treatment was defined as complete or partial pain relief after RFA.

RESULTS:

All procedures were considered technically successful, although two patients encountered complications (pes equinus contracture, skin burn). Altogether, 16 of the 17 patients (94.1%) achieved complete or partial pain relief after primary RFA. Two patients had pain recurrence, with one of them treated successfully with a second RFA. The overall clinical success rate was 88.2%. Histological findings confirmed the presence of OO in 13 patients (76.5%).

CONCLUSION:

Percutaneous RFA of OO using cool-tip electrodes without the cooling system is a safe, effective procedure.

• Authors: Masaya Miyazaki, Jun Aoki, Akiko Miyazaki, Takahito Nakajima, Yoshinori Koyama, Tetsuya Shinozaki, Keigo Endo
• Journal: Japanese journal of radiology (Jpn J Radiol) Vol. 29 Issue 2 Pg. 138-43 (Feb 2011) ISSN: 1867-108X [Electronic] Japan
• PMID: 21359939 (Publication Type: Journal Article)

Topics

• Adolescent
• Adult
• Bone Neoplasms (surgery)
• Catheter Ablation (instrumentation, methods)
• Child
• Cold Temperature
• Electrodes
• Female
• Humans
• Male
• Middle Aged
• Neoplasm Recurrence, Local
• Osteoma, Osteoid (surgery)
• Pain Measurement
• Postoperative Complications
• Treatment Outcome