Bone & Joint Infections

Question 1

3 causes of osteomyelitis

Answer 1

1. Haematogenous
2. Non-Haem Direct
3. Non-Haem local invasion

Question 2

why haematogenous bone infections happen ?

Answer 2

looped capillaries, bacteria can get stuck

Question 3

what forms in the bacteria laden looped capillaries?

Answer 3

abscess formation within bone, protected against immune system and it spreads

Question 4

osteomyelitis in children see what kind of infection?

Answer 4

Bone and joint infection due to communicating arteries

Question 5

most likely gram +ve osteomyelitis bug?

Answer 5

Staph Aureus

Question 6

most likely gram -ve osteomyelitis bugs?

Answer 6

Kingella

Salmonella

Question 7

What bugs in sneaker penetration injury?

Answer 7

Pseudomonas

Question 8

many bugs in osteomyelitis come from where?

Answer 8

in the nasals of the same patient

Question 9

3 bones most likely have osteomyelitis?

Answer 9

Humerus
Femur
Tibia

Question 10

how do you know if you have osteomyelitis and not a malignancy?

Answer 10

no fever with malignancy

delayed response for Rx for malignant bone if it’s osteomyelitis

Question 11

clinical signs of osteomyelitis?

Answer 11

fever
tenderness
erythema
oedema

Question 12

What antibiotic for gram +ve? which one doesn’t it work?

Answer 12

Flucloxacillin

except coagulase -ve staph

Question 13

osteomyelitis antibiotic regiment?

Answer 13

3-5 days IV

3/52 oral high dose if it’s uncomplicated