强直性脊柱炎(AS)是一种原因不明的,主要累及脊柱中轴关节为主的,慢性进行性关节疾病,其致残率较高,故早期诊断和治疗非常重要。本文收集临床确诊为强直性脊柱炎病例2 5例。结合临床分析其X线表现,探讨该病的发展规律和早期诊断。1　材料和方法1 .1　一般资料　本组2 5例,男2 1 Ankylosing spondylitis (AS) is an unknown cause, mainly involving the central axis of the spine, chronic progressive joint disease, its high morbidity, it is very important for early diagnosis and treatment. This collection of clinically diagnosed cases of ankylosing spondylitis in 25 cases. Combined with clinical analysis of its X-ray findings, to explore the development of the disease and early diagnosis. 1 Materials and methods 1 .1 General Information 25 cases of this group, male 2 1