240 consecutive estab. RA pts underwent cervical spine X-rays looking for ant. atlantoaxial subluxation (aAAS >3 mm); aAAS found in 25 (10.4%) mean interval =4.2mm. One-third had no neck pain. aAAS predicted by lower BMI, CCP, erosions & joint prostheses https://t.co/VTMdv6wudB https://t.co/RDbjjuJAjD