DxIm- Final General Flashcards
Osteomyelitis
infx of bone (marrow spaces)
Septic arthritis
infxn of joint
Drug addicts are prone to infxn where?
S Joints: Spine, Sacroiliac, Symphysis Pubis, Sternoclavicular
MC Infectious organism
Staph aureus
Modes of infxn
trauma/post surgical, UTI, pneumonia, skin infxn, open wound or cellulitis, heel stick in infants
Routes of dissemination
Hematogenous (MC)
Direct extension/implantation
Postoperative
Infants and YA acute process may have…
fever, chills, swelling, loss of limb fxn, inc. ESR &/or WBC w/ a shift to the left
Adult patterns have _______ process. May have…
insidious process.
may have fever, edema, erythema, pain
Preexisting infxn of skin go to…
respiratory and GI tract in 50%
Suppurative osteomyelitis occurs in
2-12 yo males 3:1
Vascular pattern in infants
Metaphyseal and diaphyseal vessels may penetrate physis
Septic arthritis and osteomyelitis
Vascular pattern in children
1 yr to physis closure
Metaphyseal blood flow is slow and turbulent
Metaphyseal vessels do NOT penetrate physis
Separate epiphysis blood supply- spares epiphysis and joints
Vascular pattern in adults
Metaphyseal vessels penetrate the vanishing physis
Reestablishes communication w/ subarticular bone end
Osteomyelitis and septic arthritis (Same as INFANT)
MC locations of infxn
Knee, hip, ankle (distal tibia), shoulder, spine
Categories of infxn
Suppurative- staph
Non-suppurative- TB
