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Oncology

OSTEOID OSTEOMA: CAN IMPEDANCE LEVELS IN RADIOFREQUENCY THERMOCOAGULATION PREDICT RECURRENCE?

British Orthopaedic Oncology Society (BOOS) - 2011 Annual Scientific Meeting



Abstract

Objective

To evaluate the rise in impedance during percutaneous radiofrequency thermo coagulation (PRFTC) of osteoid osteomas as a predictor of local recurrence.

Design and Patients

A prospective study of 23 patients (24 PRFTC procedures) with minimum of 2.25-year follow-up (average 3.3 years). Average age 19.6 years (range 4–44), sex ratio 15□:□8 (male□:□female), 16 non-diaphyseal, 7 diaphyseal.

Results

In 19 procedures, an increase in impedance was measured—no recurrences have occurred in this group to date. In 5 procedures, no increase in impedance was seen (3 non-diaphyseal, 2 diaphyseal), and 1 recurrence has been seen in this group to date. This difference is statistically significant with a P value of .05.