受累关节边缘的骨质侵蚀是类风湿性关节炎(RA)的放射学特点之一。约15%的RA病人在起病的头两年即发生明显的骨质破坏,而大部分病人随病程的进展也会出现不同程度的关节畸形及骨质侵蚀,其严重程度往往与疾病本身的严重程度成正相关,是RA病人致残的主要原因之一。一般认为,一旦骨 Invasive joint edge of the bone erosion is one of the radiological features of rheumatoid arthritis (RA). About 15% of patients with RA in the first two years of onset of significant bone destruction occurs, and most patients with the progress of the disease will also have varying degrees of joint deformities and bone erosion, the severity is often associated with the disease itself The severity is positively correlated and is one of the major causes of disability in RA patients. Generally believed that once the bone