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Case Reports in Obstetrics and Gynecology
Volume 2013, Article ID 981474, 2 pages
Case Report

Pyogenic Sacroiliitis due to Group A Streptococcus following Uncomplicated Pregnancy and Vaginal Delivery

Liverpool Hospital, Sydney, NSW 2170, Australia

Received 16 September 2013; Accepted 10 November 2013

Academic Editors: Y. Ezra, S. P. Renner, and P. Schuetze

Copyright © 2013 Yoon Sik Park et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Although the incidence of pregnancy-associated pyogenic sacroiliitis is low, it is associated with significant morbidity and mortality. Timely diagnosis of the condition is challenging due to its nonspecific clinical features. Case. A 31-year-old primigravida had an uncomplicated pregnancy and labour. Postpartum, she developed persistent fever and debilitating hip pain on ambulation. White cell count was normal (7.3 × 109/L) and C-reactive protein was elevated (468.4 mg/L). Streptococcus pyogenes was identified on vaginal swabs and blood cultures, and a pelvic magnetic resonance imaging scan revealed bilateral sacroiliitis. Conclusion. Pyogenic sacroiliitis is a potentially lethal cause of postpartum pain. It should be considered as a differential diagnosis even in low-risk women who present with debilitating pelvic pain in or around pregnancy, particularly when initial therapy appears unsuccessful.