The use of radiosynovectomy in patients with juvenile idiopathic arthritis. Assessment of treatment efficacy and safety
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Clinic of Developmental Age Rheumatology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland
Gammed Diagnostic and Treatment Center, Warsaw, Poland
Submission date: 2021-04-08
Final revision date: 2021-06-08
Acceptance date: 2021-08-04
Online publication date: 2021-08-26
Publication date: 2021-09-02
Reumatologia 2021;59(4):219–229
The aim of the study was to evaluate the usefulness of knee joint radiosynovectomy (RS) in patients suffering from juvenile idiopathic arthritis (JIA).

Material and methods:
One hundred RS procedures performed in 58 patients with JIA in average age 10.4 years were evaluated.

After 6 weeks, a decrease in the number of cases with joint pain from 90.3% to 29%, with joint oedema from 100% to 74.5%, with joint exudate from 100% to 60.6%, with gait disorders from 19.4% to 3.2%, with joint mobility disorders from 51.1% to 26.6% in the RS cases was observed. A reduction of the score in the Colorado scale from 10.9 to 4.66, in the pain visual analogue scale (VAS) from 50 to 10, in the illness VAS assessed by the patient/parent from 69.9 to 32.4, in the illness VAS assessed by the physician from 68.8 to 36.9 was observed. Six months after the RS procedure, a reduction in the number of cases with joint pain from 89.5% prior to the procedure to 29.5%, with oedema from 100% to 58.3%, with exudate from 100% to 46.9%, with gait disorders from 20% to 2.1%, with joint motility disorders from 51.1% to 26.1% was achieved. The score in the Colorado scale was reduced from 10.9 to 4.04, in the pain VAS from 40 to 0, in the illness VAS assessed by the patient/parent from 69.7 to 27.9, in the illness VAS assessed by the physician from 68.8 to 32.4. In ultrasound examinations, the greatest improvement compared to the initial condition was recorded in the 6th month after the RS. Radiosynovectomy was positively evaluated by parents and patients in 34 anonymous surveys. Early and late observations (average 1473 days) did not show lesions at the isotope injection site, and no neoplastic lesions were observed.

Radiosynovectomy is a valuable therapeutic option for local treatment in patients with JIA.

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