Septic Arthritis

Question 1

What is this a presentation of?

Systemically unwell, high temperature. Red, hot, swollen, painful knee and hip. New limp.

Answer 1

Septic arthritis

Question 2

What is septic arthritis and which pathogen commonly causes it?

Answer 2

1. Infection of joint space.

2. Staphylococcus aureus (75%)

Question 3

How is septic arthritis diagnosed?

Answer 3

1. Raised inflammatory markers
2. Blood culture
3. USS shows joint effusion

Question 4

What is the management of septic arthritis?

Answer 4

1. Urgent USS guided joint aspiration for MCS

2. IV antibiotics