Abstract
Radiological natural course of the cervical lesions in Reumatoid Arthritis (RA) were evaluated, based on a follow-up period ranged from 2 to 23 years, average 10.5 years. Severity of RA was classified according to three subsets by Ochi: the least erosive subsets (LES n=3), the more erosive subsets (MES n=4), the mutilating disease (MUD n=4).
Radiological deterioration in LES patients progressed to only atlanto-axial subluxation (AAS), but not to AAS with vertical subluxation (VS).
Radiological deterioration in MES patients progressed to various stages; AAS, AAS+VS, VS and subaxial subluxation. In MUD patients, progressed VS lesions and subaxial lesions were observed at follow up time.
