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Normal sacroiliac joint: a CT study of asymptomatic patients

Conference · · Radiology; (United States)
OSTI ID:6749148

The sacroiliac (SI) joints of 45 asymptomatic subjects were prospectively studied to define better the normal appearance of SI joints on CT scans and therby attach appropriate significance to CT signs of sacroiliitis. Joint space narrowing, subchondral sclerosis, erosions, ankylosis, osteophytes, subchondral cysts, and symmetry were evaluted. The results indicate that the SI joints demonstrate symmetry in patients under the age of 30 (100% of subjects in this age group). Those CT findings of sacroiliitis that occurred infrequently in the asymptomatic population, and hence may represent good indicators of sacroiliac disease, include increased sacral subchondral sclerosis in subjects under the age of 40 (11%), bilateral or unilateral uniform joint space of less than 2 mm (2% or 0%, respectively), erosions (2%), and intraarticular ankylosis (0%).

OSTI ID:
6749148
Journal Information:
Radiology; (United States), Journal Name: Radiology; (United States) Vol. 151:2; ISSN RADLA
Country of Publication:
United States
Language:
English

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