Septic sacroiliitis post gluteal intramuscular injection

We report an unusual case of septic sacroiliitis resulting as a complication of a previous gluteal intramuscular injection. A previously healthy young man presented with fever and severe pain in the right hip, with swelling and reduced range of movement. Imaging showed inflammatory changes suggestive of septic sacroiliitis. After treatment, the symptoms completely resolved and a follow-up computed tomography confirmed the complete resolution of the sacroiliitis. We identified that the patient took a gluteal intramuscular injection one week before his symptoms. This case highlights the possible association between septic sacroiliitis and the intramuscular injection and the importance of aseptic technique