The articular involvement (ArIn) of juvenile localized scleroderma was studied retrospectively in 190 patients with juvenile localized scleroderma patients. Of these ArIn was detected in 125 patients (65,7%), among them 99% were in cases of linear and unilateral form of JLS. It was presented by joint pain in 25% of patients, limitation of joint movement in 62% of affected patients, mostly due to periarticular induration or tissue fibrosis, joint effusions -in 1% of ArIn. 25 % of affected children complained of joint pain. Limitation of joint movements was mostly (in 70%) due to the induration of soft tissue and skin around the joint and was reversible under therapy. Joint effusions were observed in 1% of ArIn. Ultrasound investigation imaging showed slight "subclinical" -synovitis and tenosynovitis in 80% of ArIn parients. Joint space narrowing by X-ray was detected in 12, articular erosions -in 2 children. In 1 girl with unilateral scleroderma MRI with contrasting detected avascular osteonecrosis of tibia. The levels of detected autoantibodies and markers of fibrosis were significantly higher in the patients with ArIn. All the patients with ArIn received immunodepressant therapy -glucocorticosteroids (GC) orally 1mg\kilo for 6-8 weeks, then tapered and withdrawn through the 3-6 months, and methotrexate (MTX) parenterally 12mg\ sq.m. for at least 2 years. In 76% of cases of ArIn this treatment increased range of joint movements or stopped flexion contractures. Therapeutic efficacy was worse in prolonged JLS with ArIn.