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J Rheumatol ; 31(5): 896-901, 2004 May.
Article in English | MEDLINE | ID: mdl-15124247

ABSTRACT

OBJECTIVE: In a retrospective study we evaluated the effect, duration of effect, and safety of radiosynoviorthesis of the ankle in patients with persistent synovitis, refractory to disease modifying antirheumatic drugs (DMARD) and intraarticular glucocorticoid injections. We estimated leakage and dose to target and non-target organs. METHODS: Radiation synovectomy was performed by injection of 75 MBq 186rhenium colloid and 20 mg triamcinolone-hexacetonide mixed in a volume of about 1.5 ml. About 24 hours after injection, leakage of the radionuclide was measured with a single-head gamma camera, with views of the ankle joint, regional (inguinal) lymph nodes, and liver. Leakage was expressed as counts in the target region of interest corrected for background relative to total counts corresponding with percentage of injected dose. The effect of radiosynoviorthesis was scored into 3 categories: (1) No effect, i.e., persistent synovitis or only minimal reduction of swelling and/or pain, or the need of intraarticular glucocorticoid injection within 3 months or arthrodesis of the treated joint within 6 months. (2) Moderate effect, i.e., significant reduction of swelling, pain, and improvement of function. (3) Good effect, i.e., complete or almost complete remission of synovitis. RESULTS: The mean age of patients (28 women, 12 men) at the time of treatment was 58 years (range 33-76); 54 consecutive procedures in ankles of the 40 patients were evaluated. No effect was found in 12 of 54 (22%) treated joints; moderate effect in 12 (22%), with a mean duration of effect of 34 months (range 12-49); and good effect in 30 (56%), with a mean duration of effect of 41 months (range 21-75). Mean effect-duration did not differ significantly between the moderate and good effect groups. Mean leakage did not differ significantly between the effect groups. CONCLUSION: Radiation synovectomy of the ankle is a safe and effective treatment in persistent synovitis, although all patients eventually experienced recurrence of arthritis.


Subject(s)
Ankle Joint/surgery , Chlorides/therapeutic use , Radioisotopes/therapeutic use , Rhenium/therapeutic use , Synovectomy , Synovitis/surgery , Adult , Aged , Ankle Joint/pathology , Ankle Joint/radiation effects , Body Burden , Colloids , Female , Humans , Male , Middle Aged , Radiation Dosage , Recurrence , Retrospective Studies , Sulfides , Synovial Membrane/pathology , Synovial Membrane/radiation effects , Synovitis/pathology , Synovitis/radiotherapy , Treatment Outcome
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