We present a case of isolated Salmonella species group B sacroiliitis in a healthy 19-year-old collegiate-level swimmer with no known risk factors. To our knowledge, there are no similar cases described in the current literature.
Pyogenic sacroiliitis (PS) is a rare form of septic arthritis, especially in adults. PS is most commonly seen in the setting of intravenous drug use or in an immunocompromised patient. If a patient does not fit either of these demographics, PS initially can be a difficult diagnosis because of its rarity and vague symptomatology.