Bone and joint infections

Question 1

Osteomyelitis causes?

Answer 1

1. haematogenous
2. contiguous (post trauma)
3. diabetic (reduced vascularity)

Question 2

Septic arthritis pathogens?

Answer 2

• staphylococcus aureus
• haemophilis influenza if <3 yo (less common due to Hib vaccine)
• Nieserria gonorrhoea

Question 3

Prosthetic joint infection pathogen?

Answer 3

coagulase -ive staphylococci

Question 4

Prosthetic joint infection Mx?

Answer 4

I. debride and wash if within 10 days of surgery

II. radical : 1 or 2 stage removal/replacement of joint

III. lifelong suppressive abx (or 6-8 weeks)