DOS Kongressen 2014 ·
247
Clinical outcome after CT-guided radiofrequency
ablation of osteoid osteoma. Long-term follow up
in 52 patients.
Morten Knudsen, Andreas Riishede, Arne Lücke, John Gelineck, Johnny Keller,
Thomas Baad-Hansen
Department of Orthopaedic Surgery, Aarhus University Hospital; Department
of Radiology, Aarhus University Hospital
Background:
Osteoid osteoma (OO) is a benign bone tumor characterized by a
small central nidus with a high production of prostaglandins in the nidus result-
ing in characteristic clinical symptoms of constant local pain, most severe at
night. Most commonly OO occurs in children and young adults. Surgical exci-
sion of the nidus has previously been the first- choice treatment. CT-guided
radiofrequency ablation (RFA) has been introduced as a safe, minimal invasive
treatment of OO.
Purpose / Aim of Study:
The aim of this study was to evaluate the long-
term clinical outcome after CT-guided RFA in patients with OO performed from
1998 to February 2014 at Aarhus University Hospital.
Materials and Methods:
The study population included 52 patients with typi-
cal clinical history and radiologically confirmed OO who received CT-guided RFA
treatment. Clinical outcome was evaluated based on patient questionnaire and
medical record review.
Findings / Results:
Response rate was (52/60) 87% Clinical success of pain
relief after the first RFA treatment was found in (46/52) 88% of the patients
and after re-RFA clinical success of pain relief in (51/52) 98% of the patients.
One patient had an open resection made after RFA. No major complications oc-
curred and four patients had minor complications in terms of small skin burn,
minor skin infection and hypoesthesia at the entry point. (50/52) 96% of the
patients reported to be “very satisfied” with the RFA treatment.
Conclusions:
CT-guided RFA is a safe and effective treatment, with good clini-
cal results and a high patient satisfaction rate with strong reduction of pain and
improvement in quality of life. RFA should be the treatment of choice for most
OO.
194.
