Osteitis Condensans Ilii

Bilateral, symmetric sclerosis of the iliac side of the sacro-iliac joint is present in this young female, who presents with an unrelated history (motor vehicle accident).
The sclerosis appears triangular with the base located inferiorly.
Erosions are absent.
- A more detailed view confirms these finding.

Findings are compatible with Osteitis Condensans Ilii.

You may wish to review some facts concerning Osteitis Condensans Ilii:

Symmetric sclerosis of the iliac side of the sacro-iliac joint found in young multiparous women.
Can be seen in males.
Felt to be a stress related phenomenon secondary to instability at the symphysis pubis.
May be painful.
May spontaneously resolve on cessation of stress or on surgical stabilization at the symphysis pubis.

Ref: Resnick, D., Bone and Joint Imaging, W.B. Saunders, Philadelphia, PA, 1989, p. 397.
Brower, A.C., Arthritis in Black and White, W.B. Saunders, Philadelphia, PA, pp. 119-120.

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