An Unexpected Cause of Inflammatory Low BackPain: Osteitis Condensans Ilii

Abstract

A 35-year-old woman presented with a 10- year history of low back pain. The pain wasinflammatory in nature, with early morningstiffness of more than 1 hour. The patient’spersonal and family past medical history wasunremarkable. She had a history of two preg nancies with uncomplicated normal vaginaldeliveries 5 years apart. On physical examina tion, she had a positive FABER test and focaltenderness over the sacroiliac joints.