Vascular Disorders of Bone Flashcards
what is the gradient of blood pressure
Highest: Dia, meta, epi
What is the nutrient artery?
canal is diaphysis- supplies marrow, meta, and 2/3 of cortex
Where is there no vascular connection in a kid?
metaphysis and epiphysis?
Describe periosteal vessels?
supplies outer 1/3 of cortex
what causes decreased circulation of bone?
pus and blood
what are stages of bone insult?
–disruption of bone flow
–bone death- empty lacunae
–revascularization
–sclerosis and osteopenia
–Pathologic state: osteoclasts resorb dead bone an weaken it —> collapse
What is osteochondrosis?
vasc. insult to growing bone–> growth stop
What is ostenecrosis?
vasc. insult growing bone
Freinbergs Infarct is what?
AVN of metarsal head
Females
2nd metatarsal
(osteochondrosis)
Most at risk bone of decreased circulation
femoral head,
talus
lunate
scaphoid
- whole bone is covered with cartilage
Treatment for scaphoid fracture?
split or cast–> bring them back in 10 days for xray
Main artery of femoral head?
medial circumflex artery
What location affected in Legg-Calve-Perthes Disease?
Idiopathic Avascular necrosis of femoral head in kids
KIDS - 5-10 yrs
Treatment for Legg-Calve-Perthes?
protect hip from stress, try to keep head acetabulum
ANV presentation?
Pain stiffness limp Limited ROM -Degenerative changes
