Osteitis condensans ilii
A 52 year old female complained of intermittent low back pain of varying severity radiating to right thigh since 3 years. The pain was more frequent in cold season and increased after exertion. She underwent hysterectomy 12 years back for dysmenorrhoea. Laboratory investigations, including inflammatory markers, were normal. Her X-ray and MRI showed well defined areas of sclerosis around sacroiliac joints. There was no sacroiliitis.

Osteitis condensans ilii is a benign condition more common in obese multiparous females. Low back pain radiating to buttocks is a common feature. Pain is exacerbated by activity and relieved by rest. Back pain may be milder in some cases. X ray shows bilateral symmetric sclerosis on iliac sides of sacroiliac joints. The sclerosis is triangular in shape with base pointing inferiorly. Sacroiliitis needs to be differentiated by clinical examination and MRI in doubtful cases. Similar changes can occur at other sites such as pubic bones and medial end of clavicle. The condition may resolve spontaneously or X-ray picture may change from time to time. Therapy consists of posture correction and active exercises for 6-12 months. A few nonresponsive cases may require sacroiliac fusion surgery.

Osteitis Condensans Ilii XRay
Osteitis Condensans Ilii XRay

Osteitis Condensans Ilii MRI
Osteitis Condensans Ilii MRI

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