CHD

Question 1

dislocation occurs where?

Answer 1

lateral, posterior and superior direction

Question 2

differentiate between?

Answer 2

dislocation
dislocatable
subluxable
dysplastic

Question 3

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

Answer 3

dysplastic hip

Question 4

incidence of dislocatable hip?

Answer 4

12:1,000 live births

Question 5

incidence of this is smaller than dislocatable hip and is found dislocated at birth not after giving birth

Answer 5

congenital dislocated hip

Question 6

factors involved in the formation of congenital hip dislocation?

Answer 6

acetabular dysplasia
ligamentous laxity
slope of the acetabulum
hormonal i.e relaxin

Question 7

this is the large nutrient artery and not a ligament

function is not like a ligament at all

Answer 7

ligament capitus femoris

Question 8

what percent of children are born in breech presentation?

Answer 8

30%

Question 9

name this etiology?

defect in germinating cells that develop into caseous and cartilaginous structures

Answer 9

germ plasma defect

Question 10

name this etiology?

parent usually had the same thing happen at birth

Answer 10

genetic malformation

Question 11

the chance of one paren who has had CDH having a child with CDH is what percent?

Answer 11

36%

Question 12

incidence of CHD?

bilaterally? unilaterally?

Answer 12

25%

75%

Question 13

clinical presentation of CDH?

Answer 13

unequal hip total range of motion

also, limit abduction, limps, shortening of limb, telescoping, skin folds noted

Question 14

limitation of abduction of flexed thigh?

Answer 14

abduction of 50 degrees or less noted at the hip joint

Question 15

ability to push leg up beyond the hip joint articulation

Answer 15

telescoping sign

Question 16

Ddx?

Answer 16

legg perthes

slipped capital femoral epiphysis

rubella hip

Question 17

osteonecrosis of femoral head?

epiphysis has moved?

synovial tissue inflammation?

Answer 17

leg perthes

slipped capital femoral epiphysis

transient synovitis

Question 18

common workup for CDH?

Answer 18

radiographs

CBC

ESR, not rheumatoid factor
-elevated in septic hip, hematogenous OM

Question 19

examination for neonatal hip?

Answer 19

ortolani sign
barlow sign
galeazzi sign
telescoping sign
trendelenbergs sign