Bone and Joint Infection Flashcards
most useful investigations for a suspected bone/joint infection?
CRP
ESR
give examples of some occasionally useful blood tests used in bone/joint infection
blood cultures
WCC
ESR
give examples of bone/joint infections that are commonly seen
acute osteomyelitis chronic osteomyelitis septic arthritis soft tissue infection infected arthroplasty
most common bug causing acute osteomyelitis in adults?
staph aureus
most common bug causing acute osteomyelitis in children?
haemophilus influenzae
what should you do when you see signs of infection over the distal tibial area?
MRI incase acute osteomyelitis
what should be done with pus, if anything?
drain it!
pathogenesis of chronic osteomyelitis?
bone abscess forms causing the bone around it to die; an involucrum forms around the dying bone
what is an involucrum
new bone that forms around dying bone that eventually kills it
what is sequestrium
dead and dying bone
do all cases of chronic osteomyelitis need surgery
no
investigations for chronic osteomyelitis
x ray
MRI
causes of septic arthritis?
inoculation
metaphyseal spread
haematogenous
why does the muscle smell bad in necrotising fasciitis?
anaerobic muscle
history questions to ask about an infected arthroplasty?
was there ever a wound problem
has it ever been pain free
