Osteitis Condensans Ilii
Osteitis condensans ilii (OCI) is a benign cause of chronic low back pain whereby there is sacroiliac joint sclerosis of unknown pathophysiology. It can also be asymptomatic. It almost exclusively affects females, often following pregnancy.
Unknown. Suspected to be mechanical.
Chronic sacral spinal pain. Associated with tenderness over the sacroiliac joints.
On AP plain films there is a well defined triangular area of sclerosis on the iliac aspect of the bilateral sacroiliac joints. The joint space is relatively well preserved.
On MRI there is extensive sclerosis especially on the iliac side of the sacroiliac joints.
The most important differential is axial sponyloarthritis.
|Sacroiliitis of spondyloarthritis||Osteitis condensans ilii|
|Similarities||Involvement of both sacroiliac joints and subchondral sclerosis|
Unknown. Consider physiotherapy, NSAIDs, corticosteroid injection.
- Jenks, Katey; Meikle, Grant; Gray, Andrew; Stebbings, Simon (2009-04). "Osteitis condensans ilii: a significant association with sacroiliac joint tenderness in women". International Journal of Rheumatic Diseases. 12 (1): 39–43. doi:10.1111/j.1756-185X.2009.01378.x. ISSN 1756-185X. PMID 20374315. Check date values in:
- H Kang. Radiology Illustrated Spine. Springer. 2014
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