Septic Arthritis

Question 1

Etiology

Answer 1

• staph aureus
• children (h. influenza)
• e.coli
• proteus

Question 2

Route of Infection

Answer 2

i, penetrating wound

ii. intraarticular iniection
iii. haematogenous
iv. communicatinf woung

Question 3

pathology

Answer 3

i. increase bvolume of symovical joint
ii. eroded articular cartilage
iii.

Question 4

Risk Factor

Answer 4

1. age >80 yo
2. u/l RA, DM
3. hx of gout
4. recent bacteremia
5. ivdu, endocarditis (sternoclavicular joint)

Question 5

CF children

Answer 5

1. newborn
   - irrtable
   - rapid pulse
   - with/without fever

2, children

• large joint (hip or knee)
• pseudoparalysis
• rapid pulse
• swining fever

Kocher Criteria

Question 6

CF adult

Answer 6

1. superficial joint
2. swollen joint
   3, pain, unable to bewr weight
3. hot and red
4. fever
5. pain at rest, on movement
6. limited rom
7. faber position limb?

(RA silent sa)

Question 7

Investigation

Answer 7

1. fbc
   2, esr
   3, culture
2. synovial fluid analysis ~3-4 days

Question 8

Imaging

Answer 8

u/s - joint effusion, widening of joint space
x-ray- slight sublixation, widening joint space
mri - sternoclavicular, sacroiliac joint (obscure joint?)

Question 9

Treatment

Answer 9

1. supportive
   - anelgesic
   - hydration
2. splintage
   - joint disclocation
3. drainafw
   - arthroscopic
4. antibiotics

Question 10

Complication

Answer 10

1, knee sublixation
2, damage to physis, epiphysis
3, chondrolysis