Hip

Question 1

When is the iliofemoral ligament maximally stretched?

Answer 1

extension and full external rotation

Question 2

Where does the iliofemoral ligament run from

Answer 2

AIIS to intertrochanter line

Question 3

Where does the ischiofemoral ligament run from?

Answer 3

ischium to greater trochanter

Question 4

Where does the pubofemoral ligament run?

Answer 4

anterior/inferior rim of acetabulum to superior pubic ramus

Question 5

When does the pubofemoral get taut?

Answer 5

extension and abduction

Question 6

When does the ischiofemoral get taut?

Answer 6

Superficial fibers: extension and IR
Superior: adduction
Inferior: taut in felxion

Question 7

Closed Packed position of the hip

Answer 7

Extension, IR, Abduction

Question 8

Hip position of maximal congruency

Answer 8

90 deg hip flexion, moderate ER, abduction

Question 9

Full hip flexion, knees bent and straight?

Answer 9

knees bent: 120
knee straight: 80
(hamstrings stop you)

Question 10

What limits hip abduction?

Answer 10

40 degrees due to tension in the pubofemoral ligament and adductor and hamstrings

Question 11

What limits adduction?

Answer 11

25 degrees beyond neutral limited by hip abductor muscles, contralateral limb and superficial fibers ischiofemoral ligament and ITB

Question 12

How much internal rotation is there at the hip?

Answer 12

35 degrees, limited by piriformis and parts of ischiofemoral ligament

Question 13

How much ER is there at the hip?

Answer 13

45 degrees, limited by TFL and lateral fibers of the iliofemoral ligament

Question 14

Ipsi-directional Lumbopelvic Rhythm

Answer 14

pelvis and spine rotate in same direction

Question 15

Contradirectional lumbopelvic rhythm

Answer 15

pelvis rotates one direction while lumbar spine rotates the opposite direction

Question 16

Primary Hip Flexors

Answer 16

iliopsoas, sartorius, TFL, rectus femoris, pectineus, and adductor longus

Question 17

Secondary hip flexors

Answer 17

adductor brevis, gracilis, anterior fibers of gluteus medius

Question 18

Primary hip adductors

Answer 18

pectineus, adductor longus, brevis, magnus and gracilis

Question 19

Secondary hip adductors

Answer 19

biceps femoris LH, gluteus max inferior fibers, quadratus femoris

Question 20

Internal Rotators

Answer 20

All Secondary
anterior fibers glut minimus, glut medius, TFL, Adductor longus, adductor brevis, pectineus, semitendinosis, semimembranosis

Question 21

Primary Hip Extensors

Answer 21

gluteus maximus, hamstrings, posterior head of adductor magnus

Question 22

Secondary Hip Extensors

Answer 22

posterior fibers of gluteus medius, and adductors with hip flexed more than 50 degrees

Question 23

Posterior Pelvic tilt force couple

Answer 23

hip extensors (glut max, hamstrings) and abdominals (rectus abdominis and external oblique muscle )

Question 24

anterior pelvic tilt force couple

Answer 24

hip flexors, back extensors

Question 25

Primary Hip abductors

Answer 25

gluteus medius, minimus, TFL

Question 26

Secondary Hip abductors

Answer 26

sartorius, piriformis

Question 27

What are the gluteus medius fibers different motions

Answer 27

anterior: IR and flexion
posterior: ER and extension
Entire glut med: abduction

Question 28

Primary Hip external rotators

Answer 28

gluteus maximus, sartorius, piriformis, obturator internus, superior/inferior gemellus, quadratus femoris

Question 29

Secondary hip external rotators

Answer 29

posterior fibers of gluteus medius, gluteus minimis, long head biceps femoris, obturator externus

Question 30

Normal angle of inclination

Answer 30

125 degrees
coxa vara, less–105
coxa valga, greater– 140

Question 31

Normal Torsion Angle

Answer 31

10-15 degrees

greater: excessive anteversion–head goes forward, greater trochanter comes back
less: retroversion, greater trochanter goes forward

Question 32

extension of femur

Answer 32

extends 20 degrees beyond neutral with knee straight

limited to neutral with knee bent

Question 33

closed chain hip extension

Answer 33

posterior pelvic tilt

Question 34

pelvic on femoral hip flexion

Answer 34

anterior pelvic tilt

force couple between hip flexors and back extensors