Diagnostic Imaging I Practice Test 2026 – Complete Exam Prep

Osteitis condensans ilii is a benign, self-limited sclerosis of the iliac side of the sacroiliac joint that occurs most often in women of childbearing age, particularly in the postpartum period. The likely reason is the unique stresses and hormonal changes of pregnancy, which alter pelvic biomechanics and promote remodeling at the iliac wing near the SI joint. On radiographs you typically see triangular or band-like sclerosis along the iliac aspect of the SI joint with preserved joint space and no erosions, and clinically the pain is usually in the pelvic or lower back region and tends to improve with time. This demographic and imaging pattern makes postpartum females the group in which this condition is most commonly seen.