Value of CT grade in the diagnosis of sacroiliac joint lesions and joint injury in patients with ankylosing spondylitis
10.13491/j.issn.1004-714X.2026.02.011
- VernacularTitle:CT分级诊断强直性脊柱炎患者骶髂关节病变及关节损伤的价值
- Author:
Shuo LI
1
;
Yuyan ZHANG
2
;
Ke QI
1
Author Information
1. Surgical Treatment of Bone Diseases of Joints, The First Affiliated Hospital of Naval Medical University, Shanghai 200433, China.
2. Department of Medical Imaging, The First Affiliated Hospital of Naval Medical University, Surgical Treatment of Bone Diseases of Joints, Shanghai 200433, China.
- Publication Type:OriginalArticles
- Keywords:
CT grading;
Ankylosing spondylitis;
Sacroiliac joint lesion;
Joint injury
- From:
Chinese Journal of Radiological Health
2026;35(2):229-234
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic value of computed tomography (CT) grading in evaluating sacroiliac joint lesions and the extent of joint injury in patients with ankylosing spondylitis (AS) so as to provide evidence-based evidence for CT imaging diagnosis and severity evaluation of AS. Methods A total of 107 patients with AS admitted to the hospital between December 2020 and December 2024 were selected. All patients underwent X-ray and CT examinations, and were graded based on the examination results. The diagnostic value of X-ray and CT in sacroiliac joint lesions and the severity of joint injury in patients with AS was compared. Results The detection rates of osteosclerosis, bone erosion, subchondral bone cystic changes, ankylosis, and soft tissue swelling using CT (90.65%、100.00%、87.85%、41.12%、56.07%、22.43%、33.64%) were higher than those using X-ray (75.70%、84.11%、58.88%、32.71%、48.60%、10.28%、7.48%) (P<0.05). The detection rates of osteosclerosis, bone erosion, subchondral bone cystic changes, joint space narrowing, joint space widening, ankylosis, and soft tissue swelling using CT combined with X-ray (97.20%、10.00%、95.33%、57.94%、73.83%、34.58%、39.25%) were higher than those using CT or X-ray alone (P<0.05). The comparison of the detection of grade I, grade II and grade III joint injury degrees by CT, X-ray and combined examination showed statistically significant differences (P<0.05). The detection rates of grades I and II joint injuries using CT (26.17%、35.51%) were higher than those using X-ray (14.95%、22.43%) (P<0.05). The detection rates of grades 0, I, II, and III joint injury by the combined examination of X-ray and CT were higher than those using X-ray alone (P<0.05). Conclusion CT has greater diagnostic value for sacroiliac joint lesions and severity of joint injury in patients with AS, and allowing for more accurate in AS grading, and combined it with X-ray further improves diagnostic efficacy.
