强直性脊柱炎骶髂关节、腰椎小关节及髋关节的CT表现

CT Manifestations of Sacroiliac Joint,Facet Joint of Lumbar and Hip Joint in Patients with Ankylosing Spodylitis

目的探讨强直性脊柱炎(AS)受累骶髂关节、腰椎小关节及髋关节的病变CT表现特点,以提高诊断与鉴别诊断水平。方法 2011年1月-10月对临床确诊的强直性脊柱炎患者44例骶髂关节、28例腰椎及14例髋关节行CT扫描,回顾性分析骶髂关节、腰椎小关节及髋关节的CT表现。结果 AS患者的CT表现特点为病变主要累及骶髂关节滑膜部的髂骨侧,腰椎小关节及髋关节则表现为关节间隙改变、关节面毛糙及囊状破坏、面下骨硬化或吸收等改变。结论 AS骶髂关节、腰椎小关节及髋关节的CT表现具有一定特征,CT具有重要的诊断及鉴别诊断价值。

Objective To investigate CT features of sacroiliac joint,facet joint of lumbar and hip joint in patients with ankylosing spodylitis（AS）,so as to improve the accuracy of diagnosis and differential diagnosis.Methods Between January and October 2011,CT scan was performed for 86 patients with AS,involving sacroiliac joint in 44 cases,lumbar vertebra in 28,and hip joint in 14.Their CT findings were retrospectively analyzed.Results CT findings of AS showed that the disease mainly involved iliac side of synovial section in sacroiliac joint,facet joint of lumbar and hip joint,and the main manifestations of the disease included altered joint space,coarse articular surface or cystic destruction,subchondral sclerosis and erosion.Conclusion CT manifestations of ankylosing spodylitis in sacroiliac joint,facet joint of lumbar and hip joint have some special characteristic signs,thus CT can play an important role in diagnosis and differential diagnosis of the disease.