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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f33_55_34686

©2013 UpToDate ® Print Email Cervical spine fusion in systemic onset juvenile idiopathic arthritis Fusion of the cervical spine may affect up to 50 percent of children with systemic onset JIA in the first decade of life. Apophyseal joint space narrowing and bony ankylosis occur, especially at C2-C3. These changes are not usually present elsewhere in the spine.