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目的探讨强直性脊柱炎(AS)骶髂关节改变的CT特点。方法回顾性总结2000年12月～2005年12月在我院确诊的AS40例骶髂关节CT影像资料;根据CT分级,结合其临床表现及病理组织学变化进行分析。结果 AS骶髂关节CT表现以病变累及骶髂关节滑膜部髂骨侧为主,出现软骨钙化、关节间隙改变、关节面及面下骨结构改变以及骶髂韧带钙化。结论强直性脊柱炎骶髂关节CT检查能够准确地反映其病变不同阶段的改变,为临床分期提供客观依据,有助于提高早期诊断率。
Objective To investigate the CT features of sacroiliac joint changes in ankylosing spondylitis (AS). Methods The data of CT images of sacroiliac joint AS40 diagnosed in our hospital from December 2000 to December 2005 were retrospectively reviewed. According to CT classification and clinical manifestations and histopathological changes, the data were analyzed. Results The manifestations of AS sacroiliac joint were mainly calcified, the joint space was changed, the structure of the articular surface and subsurface bone was changed, and the calcification of the sacroiliac ligament was involved with the lesion involving the iliac side of the sacroiliac joint synovial part. Conclusion CT scan of sacroiliac joint in ankylosing spondylitis can accurately reflect the changes of different stages of the lesion and provide an objective basis for the clinical staging to help improve the early diagnosis rate.