The local disturbance of growth in juvenile arthritis in children occurs as a result of inflammation and a concomitant increase in vascularization that may lead either to excessively rapid growth or lack of growth of the affected bone. Detecting local disorders of growth – an important element of diagnosis of juvenile arthritis.
Examples of the symptoms of juvenile arthritis in children
The hip joint is commonly affected joint in juvenile rheumatoid arthritis in children, sometimes the disease leads to the development of a small femoral head within the acetabulum more. This pathology is noted in patients who underwent hip replacement. The small size was considered secondary to the destructive changes of joint cartilage tissue. It should be noted that in all patients the disease started before 3 years.
The knee joint is most commonly affected joint in JRA, and persistent synovitis, especially asymmetric, which leads to a significant difference in leg length. The distal femoral epiphyses are responsible for approximately 70% of the growth of the femur, so their constant inflammation leads to excessively rapid growth on the affected side in children, the epiphyses have not yet closed. Often dominated by intermediate situation, which leads to additional development of valgus deformity of the knee. The use of intra-articular injections of glucocorticoids reduces the risk of developing this pathology, there is a small amount of side effects.
Known frequent complications of juvenile arthritis are micrognathia and malocclusion. Unilateral lesion causes deviation of the chin. 69% of young people with polyarticular and systemic form observed changes in the jaw. Patients with arthritis often small, short persons with underdeveloped lower jaws. Such effects of arthritis of the temporomandibular joint are difficult to treat. Early changes can be detected at MRI. Recommended to consult a maxillofacial surgeon. Individual patients are helped by injections of glucocorticoids, and ill used transplantation of costal cartilage. Other commonly affected areas include the wrist joint (with incomplete growth of the head of the ulna) and the spine (with hypoplasia of the cervical spine).