infant hip joint Flashcards
bones, connective tissues and muscles originate from
mesoderm
hip bone composed of 3
ilium, ischium and pubis
acetabulum has the
triradiate cartilage
located at lateral aspects
articulation point for femoral head
At the rim of the acetabulum sits a lip of cartilage called
acetabular labrum
femoral head is ______ at birth
cartilaginous
femoral head begins to ossify at
2 to 8 months from the centre outwards
_____ contribute to the laxity of the fetal ligaments
maternal hormones
laxity of fetal ligaments may cause
create vulnerable atmosphere for the hip to become subluxable or dislocatable
developmental dysplasia of the hip occurs most freq when
at birth
sometimes happen during infancy
the cause of DDH may be mechanical as a result of
positional influences in utero and after birth
The cause of DDH may be physiological as a result of
resulting from a response to maternal hormones in utero
risk factors of DDH
Born in breech position
Positive family Hx
Living in cultures that swaddle infants in extension and hip adduction
Oligohydramnios
Metatarsus adductus (img) and torticollis associated with DDH
Firstborn, female, white, high birth weight, native North American
3 things done during clinical assessment of both hips
barlow maneuver
Ortolani maneuver
Visual assessment
do instabilities of hip need treatment
some but most become normal without treatment
significant dysplasia leads to
to disability / hip replacement surgeries in adulthood