How do organisms reach the synovium to cause septic arthritis?
• Hematogenously from a remote infection (70%).
• Dissemination from adjacent osteomyelitis (especially in children).
• Lymphatic spread from a soft tissue infection near the joint.
• Iatrogenic infections from arthrocentesis or arthroscopy (20%).
• Penetrating trauma from plant thorns or other contaminated objects.
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