osteomyelitis

Question 1

what is osteomyelitis?

Answer 1

infection of the bone

Question 2

what can osteomyelitis be classified into?

Answer 2

1. haematogenous

2. non-haematogenous

Question 3

which type of osteomyelitis is more common in children?

Answer 3

haematogenous

Question 4

what does haematogenous osteomyelitis result from?

Answer 4

bacteraemia, usually monomicrobial

Question 5

what is the most common form of haematogenous osteomyelitis in adults?

Answer 5

vertebral osteomyelitis

Question 6

what are the risk factors for haematogenous osteomyelitis?

Answer 6

• sickle cell anaemia
• IVDU
• immunosuppression (meds / HIV)
• infective endocarditis

Question 7

what does non-haematogenous osteomyelitis result from?

Answer 7

contiguous spread of infection from adjacent soft tissues to the bone or from direct injury / trauma to the bone, often polymicrobial

Question 8

what is the most common form of osteomyelitis in adults?

Answer 8

non-haematogenous osteomyelitis

Question 9

what are the risk factors for non-haematogenous osteomyelitis?

Answer 9

• diabetic foot ulcers / pressure sores
• DM
• peripheral arterial disease

Question 10

what is the most common causative organism for osteomyelitis?

Answer 10

staph. aureus

Question 11

what is the predominating species causing osteomyelitis in pts with sickle-cell anaemia?

Answer 11

salmonella species

Question 12

what is the imaging modality of choice for osteomyelitis?

Answer 12

MRI

Question 13

what is the mx of osteomyelitis?

Answer 13

• flucloxacillin for 6 weeks

- clindamycin if penicillin-allergic