MSK- infections Flashcards
osteomyelitis
infection of bone and/or bone marrow
osteomyelitis usually occurs in
children but can occur in adults
risk factors osteomyelitis
immunocompromised
elderly
young
patients with chronic disease
osteomyelitis in newborn organisms
s.aureus, enterobacter sp, group a and group b strep
osteomyelitis in children
s.aureus, enterobacter, group a strep, h.influenza
osteomyelitis in adults
s.aureus, occasionally enterobacter/strep
osteomyelitis in sickle cell anaemia patients organism
s.aureus, salmonella
gold standard test for osteomyelitis
bone biopsy to confirm
septic arthritis
inflammation of joint space caused by infection
most common organism cause of septic arthritis in adults
straph aureus
second most common organism cause of septic arthritis in adults
streptococci
most common organism cause of septic arthritis in children
H.infleunza- uncommon where vaccine is
cause of septic arthritis in young adults
neisseria gonorrhoea
E.coli in septic arthritis
elderly, Iv drug users, seriously ill
septic patients antibiotics
flucloxacillin, if under 5 add ceftrioxine
risk factors for PJI
- Presence of comorbidities e.g. rheumatoid arthiritis, diabetes, malignancy
- Use of corticosteriods, TNF inhibitors
- Prior arthroplasty or prior infection at surgical site
- Prolonged duration of surgery
- Postoperative complications
- Staph. aureus bacteraemia (from another cause)
debridement
removal of dead, damaged, or infected tissue
PIJ management early/haematogenous- DAIR
debridement, antibiotics (12 weeks), implant retention
PIJ management chronic disease for frail patients
removal of joint and antibiotics
PIJ management chronic disease
removal of joint and aggressive antibiotic therapy for 6 weeks, revision joint replacement
