Septic arthritis

Question 1

Common organism in infants?

Answer 1

H.influenzae

Question 2

Common in young sexually active adults?

Answer 2

N.Gonnorrhoea

Question 3

Main cause of breakdown of articular cartilage in this condition?

Answer 3

Enzymes produced by leukocytes

Question 4

In which joints is SA most common?

Answer 4

Hip and Knee

Question 5

What should be done with the aspiration from a joint? (3)

Answer 5

Gram stain
Culture
Examination for crystals

Question 6

Risk in the hip -

Answer 6

can lead to avascular necrosis

Question 7

Most common cause of osteomyelitis

Answer 7

staph. areus

Question 8

Common type of osteomyelitis in children

Answer 8

Actue haematogenous

Question 9

Where does the bacteria settle in children in OM?

Answer 9

metaphysis

Question 10

what type of abscess can form in OM?

Answer 10

subperiosteal abscess

Question 11

What does an abscess in OM lead to?

Answer 11

Bone death which harbours the infection

Question 12

What forms round the sequestrian in OM ?

Answer 12

New bone

Question 13

Congenital RF for OM? (2)

Answer 13

Sickle cell disease

Haemophilia

Question 14

Acquired RF for OM? (5)

Answer 14

Diabetes 
Renal failure 
IV drug use 
Malnutrition 
Immunosuppression

Question 15

What will the x-ray initially look like in OM ?

Answer 15

Normal

Question 16

What will the x-ray look like after 10 day in OM?

Answer 16

New bone formation and periostal elevation

May be sclerotic lesions

Question 17

First line AB for OM?

Answer 17

Flucloxacillin