Bone And Joint Infection Flashcards
Is acute or chronic septic arthritis pyogenic
Acute - hot swollen
Is septic arthritis more commonly mono articular or poly articular
Mono
Most common route for pathogens to reach joint in septic arthritis
Blood
Routes for pathogens to enter joint
Local soft tissue infection
Diagnostic or therapeutic procedures
Penetrating trauma
Adjacent osteomyelitis
Haematogenous
Most common organisms causing septic arthritis
Staphylococcus aureus
Septic arthritis risk factors
Previous damage to joint
Untreated systemic infection
Condition effecting blood supply to the joint
Joint most commonly effected by septic arthritis
Knee
what does elevated ESR and CRP show
Ongoing inflammatory reaction
How does synovial fluid appear on examination in septic arthritis
Turbid
Purulent
High leukocytes predominantly neutrophils
Glucose <25mg/dL - less than serum
Main leukocyte in septic arthritis
Neutrophil
Septic arthritis signs on radiology
Soft tissue swellings
Joint capsule distension
Erosion of articular surface
What type of septic arthritis causes joint space narrowing, effusion, erosions, and cyst formation on XR
Mycobacteria infection
Septic arthritis treatment
Drainage and washout every few days
Antibiotics
Reactive arthritis
inflammatory arthritis that manifests several days to weeks after a gastrointestinal or genitourinary infection
Presence of Which HLA increases reactive arthritis risk
HLA-B27