Hip Joint Complex

Front 1

femur on pelvis is what kind of chain system?

Back 1

open chain

Front 2

pelvis on femur is what kind of chain system?

Back 2

closed chain

Front 3

the hip is what kind of joint? and how many degrees of freedom?

Back 3

ball and socket

3 degrees of freedom

Front 4

what kind of motions occur at hip joint when the femur is moving on the pelvis?

Back 4

1. flex/ext
2. abduction/adduction
3. internal/external rotation
(medial/lateral)

Front 5

during flexion and extension what is the motion of the femoral head?

Back 5

femoral head spins on pelvic acetabulum

Front 6

extension at the hip joint is limited by what?

Back 6

twisting of all 3 ligaments

Front 7

flexion at the hip joint is limited by what?

Back 7

inferior ischiofemoral ligament

Front 8

arthrokinematics of hip abduction?

Back 8

femoral head rolls superior
slides inferior

Front 9

hip abduction is limited by?

Back 9

pubofemoral ligament

Front 10

hip adduction is limited by?

Back 10

superior ischiofemoral ligament

Front 11

arthrokinematics of hip adduction?

Back 11

femoral head rolls posterior and
slides superior

Front 12

arthrokinematics of hip medial rotation?

Back 12

femoral head rolls anterior and
slides posterior

Front 13

hip medial rotation is limited by?

Back 13

superficial ischiofemoral ligament

Front 14

arthrokinematics of hip lateral rotation?

Back 14

femoral head rolls posterior and
slides anterior

Front 15

hip lateral rotation is limited by?

Back 15

iliofemoral ligament

Front 16

what motions and around what axis occur at the hip joint when the pelvis moves on the femur?

Back 16

1. anterior/ posterior pelvic tilt = mediolateral axis

2. lateral pelvic tilt = a/p axis

3. anterior/ posterior pelvic rotation = vertical axis

Front 17

arthrokinematics of anterior/posterior pelvic tilt?

Back 17

pelvic acetabulum spins on femoral head

Front 18

arthrokinematics of lateral pelvic tilt = pelvic hike?

Back 18

pelvis rolls and slides superiorly

Front 19

arthrokinematics of lateral pelvic tilt = pelvic drop?

Back 19

pelvis rolls and slides inferiorly

Front 20

arthrokinematics of anterior pelvic rotation?

Back 20

pelvis rolls and slides anteriorly

Front 21

arthrokinematics of posterior pelvic rotation?

Back 21

pelvis rolls and slides posteriorly

Front 22

loose and close packed positions of the hip joint?

Back 22

loose = ~ 30 flexion and ~30 abduction

close = full extension + abd and medial rotation as possible

Front 23

how much of the weight of the upper body can the passive hip tissues support?

Back 23

2/3 of upper body weight

Front 24

downward forces act on femur from what?

Back 24

weight of upper body

Front 25

upward forces act on femur from what?

Back 25

contact at the knee

Front 26

get more flexion at hip when the knee is?

Back 26

flexed

Front 27

extension range of motion is affected by knee?

Back 27

flexion

Front 28

hip abduction and adduction can be limited by?

Back 28

passive muscle stiffness

Front 29

medial/lateral rotation of the hip is measured with the hip at?

Back 29

90 degree flexion

Front 30

what are the primary hip flexors?

Back 30

1. iliopsoas 1
2. rectus femoris 2
3. sartorius 2
4. TFL 1

Front 31

what are the secondary hip flexors?

Back 31

1. pectineus
2. adductor longus
3. adductor magnus
4. gracilis

Front 32

contraction of the hip flexors in a closed chain position would cause?

Back 32

anterior pelvic tilt

Front 33

contraction of the hip flexors in an open chain sistem would cause?

Back 33

hip flexion

Front 34

during walking you can find hip flexion?

Back 34

beginning of leg swing

Front 35

iliopsoas strength is only affected by?

Back 35

hip position

Front 36

rectus femoris and ~sartorius and TFL strength and flexibility are influenced by?

Back 36

hip and knee position

Front 37

what are the primary hip extensors? 4

Back 37

1. gluteus maximus - 1
2. biceps femoris - 2
3. semitendinosus - 2
4. semimembranosus - 2

Front 38

what are the secondary hip extensors? 3

Back 38

1. gluteus medius
2. adductor magnus
3. piriformis

Front 39

contraction of the hip extensors in a closed chain system would cause?

Back 39

posterior pelvic tilt

Front 40

contraction of the hip extensors in an open chain system would cause?

Back 40

hip extension

Front 41

in what phase of gait would you see hip extension?

Back 41

propulsion during stance phase

Front 42

gluteus maximus is only influenced by?

Back 42

hip position

Front 43

hamstring strength and flexibility are influenced by?

Back 43

hip and knee position

Front 44

if a muscle has a line of action anterior to the hip joint axis of rotation it will be a?

Back 44

hip flexor

Front 45

if a muscle has a line of action posterior to the hip joint axis of rotation it will be a?

Back 45

hip extensor

Front 46

what are the primary hip abductors?

Back 46

1. gluteus medius - 1
2. gluteus maximus - 1

Front 47

contraction of the hip abductors in a close chain system would cause?

Back 47

pelvic hike

Front 48

while walking what effect does pelvic hike have?

Back 48

stabilizes the frontal plane

Front 49

contraction of the hip abductors in an open chain system would cause?

Back 49

hip abduction

Front 50

when do you see hip abduction during walking?

Back 50

at foot placement at the end of swing phase

Front 51

what are the primary hip adductors?

Back 51

1. pectineus - 1
2. adductor brevis/longus/magnus - 1
3. gracilis - 2

Front 52

contraction of the hip adductors in a closed chain system would cause?

Back 52

pelvic drop

Front 53

contraction of the hip adductors in an open chain system would cause?

Back 53

hip adduction

Front 54

you would see hip adduction during?

Back 54

instep kicks

Front 55

you would see pelvic drop during?

Back 55

lateral raises of the body's weight

Front 56

if a muscle has a line of action lateral to the hip joint axis of rotation the muscle will be a?

Back 56

hip abductor

Front 57

if a muscle has a line of action medial to the hip joint axis of rotation the muscle will be a ?

Back 57

hip adductor

Front 58

what are the primary hip lateral rotators?

Back 58

1. obturator internus/externus
2. gemellus superior/inferior
3. quadratus femoris
4. piriformis

all 1 joint ms

Front 59

what are the secondary hip lateral rotators?

Back 59

1. gluteus maximus
2. gluteus medius
3. biceps femoris (long head)

Front 60

contraction of the hip lateral rotators in a closed chain system would cause?

Back 60

posterior pelvic rotation

Front 61

contraction of the hip lateral rotators in an open chain system would cause?

Back 61

hip lateral rotation

Front 62

when would you see pelvic posterior rotation during running?

Back 62

during change of running direction

Front 63

what are the hip medial rotators?

Back 63

1. gluteus minimus
2. gluteus medius

Front 64

contraction of the hip medial rotators in a close chain system would cause?

Back 64

anterior pelvic rotation

Front 65

contraction of the hip medial rotators in an open chain system would cause?

Back 65

hip medial rotation

Front 66

during walking what does pelvic anterior rotation contribute to?

Back 66

step length during walking

Front 67

if a muscle has a line of action posterior to the hip joint axis of rotation it will be a?

Back 67

hip lateral rotator

Front 68

if a muscle has a line of action anterior to the hip joint axis of rotation will be a?

Back 68

hip medial rotator