Osteoid Osteoma : Can Impedance Levels in Radiofrequency Thermocoagulation Predict Recurrence?

الملخص EN

Objective.

To evaluate rise in impedance during percutaneous radiofrequency thermocoagulation (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 followup (average 3.3 years).

Average age 19.6 years (range 4–44), sex ratio 15 : 8 (male : female), 16 nondiaphyseal, 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.