Clinical sequelae and sacroiliac joint changes by computed tomography after recovery from septic sacroiliitis

Nine cases of septic sacroiliitis were re-examined clinically and by CT after a follow-up period of 1.5–7 years. At the final ckeck-up, six of the patients were asymptomatic, while pain could be provoked by palpation or compression in three cases. The sacroiliac joint CT findings were considered normal in two cases. Joint space narrowing, subchondral sclerosis, cysts, erosions, ankylosis and/or osteophytes were detected in seven cases. We conclude that recovery from septic sacroiliitis is good although destructive and degenerative changes often develop as sequelae of an osteolytic involvement.