Electronic medical records of all patients were obtained from the "Hospital Information Management System" and analyzed comprehensively. According to the International Classification of Diseases (ICD) 10, patients presenting with septic arthritis clinical findings were identified, and the preliminary diagnosis and definitive diagnosis were recorded. Definitions: Hematogenous spread (sinusitis, bronchiectasis, endocarditis, meningitis or other) was defined as a blood culture positivity, spread from the adjacent infected focus (inoculation) as the presence of an infection site that may be a source of infection (osteomyelitis, insect bites, clinical finding and newly proven radiological findings suggesting adjacent joint, skin or bone infection). During the study time, 1,174 patients were admitted to the emergency department due to complaints and symptoms suggestive of SA. After the initial evaluation, arthrocentesis was performed in 486 patients who were evaluated as possible SA. Among these, 394 patients met our inclusion criteria and formed our study population.