Radiology Research and Practice (Jan 2011)

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

  • Matthew Ockendon,
  • Jonathan J. Gregory,
  • Gillian L. Cribb,
  • W. Paul Cool,
  • D. Charles Mangham,
  • Radhesh Lalam

DOI
https://doi.org/10.1155/2011/753502
Journal volume & issue
Vol. 2011

Abstract

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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.