Abstract
INTRODUCTION AND IMPORTANCE: Septic arthritis of the pubic symphysis is a rare postpartum infection characterized by severe pelvic pain, fever, and elevated inflammatory markers. It is often underdiagnosed due to its rarity and nonspecific symptoms. It is commonly caused by Staphylococcus aureus, with methicillin-resistant Staphylococcus aureus (MRSA) septic being a rare but concerning pathogen. CASE PRESENTATION: We report the case of a 36-year-old woman who developed septic arthritis of the pubic symphysis caused by MRSA after spontaneous vaginal delivery. CLINICAL DISCUSSION: Differentiating between diastasis and septic arthritis of the pubic symphysis is crucial for treatment. Noninfective pubic osteitis can mimic septic arthritis, presenting a diagnostic challenge. Imaging, laboratory data, and cultures are essential for accurate diagnosis. MRSA colonisation during pregnancy and postpartum trauma may facilitate infection. MRI is the most sensitive imaging modality for early detection and monitoring. CONCLUSION: Septic arthritis of the pubic symphysis secondary to MRSA is a rare cause of postpartum pelvic pain. Prompt diagnosis and treatment are essential for favourable outcomes.