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2. Learning Objectives
• Introduction
• Epidemology
• Etiology/Cause
• Risk Factors
• Pathophysiology
• Clinical Manifestations
• Inivestigations/Diagnosis
• Treatment(Rx)
• Compilication

5. Septic (infectious) arthritis
 Infection of joint resulted of invasion of the
synovial membrane by microorganisms which
can be:
 Spread of infection from other parts of the body (hematogenous spread) or
 Direct entrance through trauma or surgical instrumentation.
 S. aureus causes 50% of all joint infections and
80% of septic arthritis in patients with
rheumatoid arthritis and diabetes

8. Etiology

10. Causes of septic arthritis
Neisseria gonorrheal
Meningococcal
Streptococci
Staphylococcus aureus
Salmonella
Haemophilus influenza

11. Etiology

19. Pathophysiology septic arthritis
 Bacterial invasion of synovial space
 Inflammation of the synovial tissue
 Accumulation of pus in the synovial membrane and
synovial fluid
 Abscess accumulation in the synovium and subchondral
bone
 Destroying of the cartilage and ankylosis of joints.