Septic Arthritis Flashcards

1
Q

What is septic arthritis?

A

Infection within a joint

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2
Q

What are the routes of infection?

A

Haematogenous
Eruption of bone abscess
Direct invasion through penetrating wound

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3
Q

What are some causative organisms?

A

Staph aureus
Neisseria gonorrhoea
Group A strep
Haemophilus influenzae
E. coli

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4
Q

What is the pathology of septic arthritis?

A

Acute synovitis with purulent joint effusion
Complete destruction of articular cartilage

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5
Q

What is the presentation of septic arthritis?

A

Acute pain in a single large joint
Hot, red, swollen, painful
Stiffness and reduced ROM
Fever, lethargy, sepsis

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6
Q

What are some investigations?

A

FBC, WCC, ESR, CRP
Blood culture
X ray
Ultrasound
MRI
Aspiration and culture

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7
Q

What are differentials for septic arthritis?

A

Acute osteomyelitis
Trauma
RA
Haemophilia
gout

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8
Q

What is the management of septic arthritis?

A

Supportive measures
Empirical IV antibiotics for 3-6 weeks- flucloxacillin + rifampicin

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