Ch 44: Peds Musculoskeletal Flashcards
Developmental Dysplasia of the Hip
head of the femur is seated improperly in the acetabulum of the pelvis
Acetabular Dysplasia (preluxation) (DDoH)
mildest form
neither subluxation nor dislocation
delay in acetabular development occurs
femoral head remains in acetabulum
Subluxation (DDoH)
incomplete dislocation of the hip
femoral head remains in acetabulum
stretched capsule and ligamentum teres causes head of the femur to be partially displaced
dislocation (DDoH)
femoral head loses contact with acetabulum and is displaced posteriorly and superiorly over fibrocartilaginous rim
ligamentum teres is elongated and taut
Galeazzi’s sign, Allis’ sign
shortening of the limb on the affected side (DDoH)
Ortolani’s test (DDoH)
meaneuver is a test to assess for hip instability. examiner abducts the thigh and applies gentle pressureforward over the greater trochanter. a “clunking” sensation indicated a dislocated femoral head moving into the acetabulum.
Barlow’s test (DDoH)
examiner adducts the hips and applies gentle pressure down and back with the thumbs. in hip dysplasia, the examiner can feel the femoral head move out of the acetabulum.
Trendelenburg’s sign (DDoH)
child stands on one foot and then the other foot, holding onto a support and bearing weight on the affected hip; the pelvis tilts downward on the normal side instead of upward, as it would with normal stability.
Pavlik harness
DDoH: birth to 6 mo
worn continuously until ~3-6mo
hip spica cast
DDoH: 6-18 mo
following reduction under general anesthesia
worn for 2-4 mo until hip is stable
then flexion abduction brace for ~3mo
CF: talipes varus
inversion or bending inward
CF: talipes valgus
eversion or bending outward
CF: talipes equinus
plantar flexion in which the toes are lower than the heel
CF: talipes calcaneus
dorsiflexion in which the toes are higher than the heel
clubfoot treatment
manipulation an dcasting are performed weekly for about 8-12 wks
splint is then applied if casting and manipulation are succesful
surgical intervention may be necessary if normal alignment is not achieved by ~6-12 wks of age