hip anatomy review Flashcards
what two planes do we consider the femoral neck in
angle of inclination
torsional angle
in the angle of inclination frontal or transverse
frontal
is the torsional angle frontal or transverse
transverse
why do we care about the nagular characteristic of the hip
may have a potential effect on the joint stability of the hip
does the angle chnage throughout devlopment
yes
what are the two terms of the angle of inclincation
coxa valga and coxa vara
what is the function of the angle of inclination
orients the femoral shaft more laterally and provides a better lever arm for the hip abd
angulation of the femoral neck in the frontal plane
what is the normal angle of inclincation
125-deg
what is coxa valga
when the angle of inclination is greater then 125
what is coxa vara
when the nagle of inclination is less then 125
at what angle of inclination is the hip less stable
coxa valga
brings the trochanter inwards so it is less efficient and has less of a pull
at what angle of inclincation is the hip more stable
coxa vara
what is coxa vara
the angle of inclincation is less then 120
is the angle of inclination greater when we are younger or older
younger
angle decreases as we age
what is the torsional angle
angulation of the femoral neck in the the tranverse plane
what is the normal torsional angle
8 -10
what is anteversion
increased torsional angle
what is the retroversion
decreased torsional angle
toe in or out with anteversion
toe in
toe in or out with retroversion
toe out
what is the angle of inclination at birth
150 at birth and decreases with age
what is the torsional at birth
30 -60
what is the acetablum
site of articulation with the femoral head
what deepens the acetabulm
the fibrocartilgenous labrum
what is the orientation of the the femoral head
anterior
lateral
inferior
what is the center angle
the degree of overhang of the acetabulmn over the femoral head
center of the femoral head to the lip of the acetabulm
what happens if there is too much over hang
impingment
what is the def of dysplagia
innsufficient acetabular coverage
what ligament spans the ace notch
the transverse notch
what is the function of the labrum
increases joint stability
is the joint capsule reinforced
yes it has ligamentous reinforcement
z in the front
what are the three movements that are allowed at the hip
flex/ext
IR/ER
abd/add
how much more converage does the labrum provide
20%
what are the ligament the reinforce the joint capsule of the hip
iliofemoral (ant)
pubofemoral (ant)
ischiofemoral (post)
what three muscle make up the iliopsoas
illiacus
psoas major and minor
what muscle make up the quad
rec fem
vastus lateralis, medialis, intermedius
what is the function of the satoruis
flexes the hip
lateral rot of the hup and abd
what muscle make up the add region
pectinus
add magnus, brevis , longus
what three muscle instert onto the the greater trochnater
piriformis
glute min and med
what muscle insert onto the greater trochanter ridge
sup gemellus
inf gemellus
obertator internus
is the hamstring a two joint or one joint muscle group
two joint
knee and hip
what muscles produce hip flexion
quads - rec fem
iliopsoas - primary hip flexor
TFL
when is the rec fem most powerful in hip flex
when the knee is flexed
what muscel produce hip ext
glute max - most powerful
hamstring
secondary flexors
pectinus
sartoruis
garcilius
add longus and magnus
what attaches to the pes anserine
SGT
sartorius
garcilius
semitendinosis
secondary extensors
pectinus
add longus and magnus
garcilius
what muscle do hip abd
glute med - most powerful
glute min
TFL
as the hip flexes what happens to the adb power of the glute med
it loses the power of abd as the hip flexes and becomes more of a internal rotator
trandelenburg sign signifies what
weak abd
what muscles do hip ADD
add magnus - most powerful
add longus - most injuryed
add brevis
pectinus
gracilius
what muscle ER the hip
piriformis
obturator internus
obturator externus
gemellus inf and sup
quad femoris
what are 2ndary ER
glute med and max
sartorius
what does hip IR
this is not a primary function of any of the muscle at the hip
TFL and the naterior fibers of glute med and min contribute
alvusion frcatures and rec fem
AIIS
alvusion frcatures and hamstrings
ischial tube
alvusion frcatures and sartoruis
asis
alvusion frcatures and adductor longus
pubis
where are bursa located
near tendons and joint
what is bursitis
when the bursa become inflammed and painful
where are the bursa located in the hip
iliopsoas
trochanteric
ischial
what muscle does the lumbar plexus pass through
psoas muscle
anterior hip nerve
femoral
posterior hip nerve
sciatic
anerior medial nevre
obturator nerve
where does the femoral art run
anterior hip and leg region
what makes up the femoral trinangle
borders: inguinal ligament, abd longus, sartourius,
floor: pectinus, and iliopsoas
what runs: femoralart, vien, nerve, inguinal lymph nodes
what is the loose pack position for the hip
30 flex. 30 abd . and some ER
position of most ligament laxity
what is the closed packed position for the hip
ext
slight abd
some IR
not the usual position for dislocation
hip arthro - roll and glide NW
oppostie
hip arthro - flexion
anterior + sup roll
posterior + inf glide
hip arthro - ext
post + inf roll
ant + sup glide
hip arthro - abd
sup + lat roll
inf + medial glide
hip arthro - add
inf + medial roll
sup + lat glide
hip arthro - IR
ant roll
post glide
hip arthro - ER
post roll
ant glide
what muscle is most inloved in the SI joint
the piriformis
contraction of this muscle can cause torsion of the innominate
what muscle cause anterior rotation of the innominate
ilipsoas and rec fem
what muscle group causes posterior rotation of the innominate
hamstring group
