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In this patient axial short tau inversion recovery magnetic resonance imaging of the right foot showed a bone marrow edema at the right second metatarsal (Figure 1B). (B) Magnetic resonance imaging of the foot showing bone marrow edema of second metatarsal bone gl B Answers on page 2. b "BALLET FOOT" IN A BOY: PART 2 What is the possible diagnosis? Keywords: clinical aspects; rehabilitation EN clinical aspects rehabilitation 719 720 2 05/05/21 20210501 NES 210501 A previously healthy 10-year-old boy presented with a 2-month history of pain and marked non-reducible plantar flexion of the right foot. [Extracted from the article]

Objective: To evaluate the efficacy and safety of a chimeric monoclonal anti-tumor necrosis factor alpha antibody (infliximab) with methotrexate (MTX) in juvenile idiopathic arthritis (JIA) with an active polyarticular course that is not responsive to MTX., Methods: Twenty-four young adults with long-lasting, refractory JIA were enrolled in an open, prospective, 2-year pilot study. Patients received intravenous infliximab at 3 mg/kg of body weight at weeks 0, 2, and 6 and every 8 weeks thereafter, with weekly subcutaneous MTX., Results: The median duration of therapy was 9.1 months. Significant improvements were observed in the number of joints (28-joint count) with active disease (median 6 at baseline, 2 at 2 weeks, 0 at 6 months, 0 at 1 year; P < 0.05). Pain as well as patient's and physician's global assessments of disease status were assessed on 0-100-mm (0 = best; 100 = worst) visual analog scales (VAS). There were significant improvements in VAS pain scores (45 at baseline, 25 at 2 weeks, 8.5 at 6 months, 10 at 1 year; P < 0.05), patient's global assessment of disease status (50 at baseline, 22 at 2 weeks, 11.5 at 6 months, 18 at 1 year; P < 0.05), and physician's global assessment of disease status (50.5 at baseline, 22.5 at 2 weeks, 6.5 at 6 months, 10 at 1 year; P < 0.01). In addition, there were significant improvements in the erythrocyte sedimentation rate (64 mm/hour at baseline, 36 mm/hour at 2 weeks, 23.5 mm/hour at 6 months, 35 mm/hour at 1 year; P < 0.01) and C-reactive protein level (4.9 mg/dl at baseline, 2.8 mg/dl at 2 weeks, 3.1 mg/dl at 6 months, 3.2 mg/dl at 1 year; P < 0.005). The percentage of patients meeting the American College of Rheumatology 20% improvement criteria at each assessment ranged from 54.2% to 86.7%. Of the responses on the Disease Activity Score in 28 joints, 37.5-63.6% were classified as "good," 14.3-33.3% were classified as "moderate," and 18-37.5% were classified as "no response." Twelve patients (50%) had adverse events, and 5 patients (20.8%) withdrew., Conclusion: Infliximab plus MTX showed high effectiveness and safety in short- and medium-term treatment of long-lasting refractory JIA. A controlled multicenter clinical trial is needed.