Atlantoaxial subluxation is well recognized as a late complication of juvenile arthritis1. Early subluxation is uncommon, but it has been reported in 2 patients with juvenile ankylosing spondylitis (AS)2,3 and in 2 patients with juvenile idiopathic arthritis (JIA)4,5.
A 12-year-old girl was diagnosed with JIA, enthesitis-related arthritis (ERA) subtype, in March 2012 when she presented with a 1-year history of joint pain and stiffness. She was positive for HLA-B27, and a …