Osteomyelitis Flashcards
1
Q
Common causative organisms
A
Staph aureus
2
Q
Common causative organism with sickle cell
A
Salmonella
3
Q
Haematogenous osteomyelitis
A
Due to bacteraemia
- more common in children
- monomicrobial
- from cellulitis, UTI, chest infection
4
Q
RF for haematogenous osteomyelitis
A
Sickle cell
IVDU
Immunosuppression - HIV, DMARDS
Infective endocarditis
5
Q
Non haematogenous osteomyelitis
A
Contiguous spread of infection from adjacent soft tissues or bone trauma
- polymicrobial
- more common in adults
6
Q
Non haematogenous osteomyelitis RF
A
Diabetic foot ulcers
Pressure sores
DM
Peripheral vascular disease
7
Q
Gold standard investigation
A
MRI
8
Q
Mx
A
Analgesia
Flucloxacillin for 6 weeks
Clindamycin if allergic
9
Q
Presentation
A
- Pain, tenderness, erythema, warmth, ↓ROM
- Effusion in neighbouring joints
- Signs of systemic infection
10
Q
Investigations
A
- ↑ESR/CRP, ↑WCC
- +ve blood cultures
• X-ray:
- Changes take 10-14d
- Haziness + ↓ bone density
• MRI is sensitive and specific
