CHD Flashcards
dislocation occurs where?
lateral, posterior and superior direction
differentiate between?
dislocation
dislocatable
subluxable
dysplastic
not dislocated hip
abnormally of development in pathology, alteration in size, shape and organization of adult cells
orgin: Gr. plassein to form
hip can dislocate until age 2 years
dysplastic hip
incidence of dislocatable hip?
12:1,000 live births
incidence of this is smaller than dislocatable hip and is found dislocated at birth not after giving birth
congenital dislocated hip
factors involved in the formation of congenital hip dislocation?
acetabular dysplasia
ligamentous laxity
slope of the acetabulum
hormonal i.e relaxin
this is the large nutrient artery and not a ligament
function is not like a ligament at all
ligament capitus femoris
what percent of children are born in breech presentation?
30%
name this etiology?
defect in germinating cells that develop into caseous and cartilaginous structures
germ plasma defect
name this etiology?
parent usually had the same thing happen at birth
genetic malformation
the chance of one paren who has had CDH having a child with CDH is what percent?
36%
incidence of CHD?
bilaterally? unilaterally?
25%
75%
clinical presentation of CDH?
unequal hip total range of motion
also, limit abduction, limps, shortening of limb, telescoping, skin folds noted
limitation of abduction of flexed thigh?
abduction of 50 degrees or less noted at the hip joint
ability to push leg up beyond the hip joint articulation
telescoping sign
Ddx?
legg perthes
slipped capital femoral epiphysis
rubella hip
osteonecrosis of femoral head?
epiphysis has moved?
synovial tissue inflammation?
leg perthes
slipped capital femoral epiphysis
transient synovitis
common workup for CDH?
radiographs
CBC
ESR, not rheumatoid factor
-elevated in septic hip, hematogenous OM
examination for neonatal hip?
ortolani sign barlow sign galeazzi sign telescoping sign trendelenbergs sign
