bacteriological infections

Question 1

what are the 2 routes joints can be affected

Answer 1

haemotogenous and directly following trauma or surgery

Question 2

staphylococcus aureus

Answer 2

normal skin flora in up to 40% people

causes skin/soft tissue infection

may cause seeding in distant sites (osteomyelitis, septic A, infective endocarditis)

14 days of treatment to prevent sequelae including osteomyelitis

Question 3

acute osteomyelitis

Answer 3

involves growing end of a long bone
sprouting capillary loops adjacent to epiphyseal growth plates promote localisation of circulating bacteria

results in painful tender bone lesion and general febrile illness

Question 4

diagnosis of osteomyelitis

Answer 4

blood cultures/bone biopsy
periosteal damage = fluffy bone on xray

Question 5

septic bursitis

Answer 5

acute or repetitive trauma
staph aureus
drainage
antibiotics

Question 6

arthrocentesis

Answer 6

procedure done to remove the synovial fluid accumulated around the joints

healthy knee is less than 3ml of fluid
inflammation can go to 25ml