OO of the acetabulum can clinically and radiologically mimic an ankylosing spondylitis (with coxitis and sacroiliitis). Management of OO include multidisciplinary approach including radiologist, rheumatologist, and orthopedist.
Keywords: CT scan; acetabulum; coxitis; hip; osteoid osteoma.
© 2019 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd.