Hip

Question 1

what cartiledge on the acetablium articulates with the femoral head

Answer 1

hyLINE ON THE lunate surface

Question 2

what is the only part of the femur not covered w articular cartiledge

Answer 2

foeva

Question 3

explain how you would cue a pt to maximise a stretch at hamstrings

Answer 3

hammy: knee flex and hip exst
so knee exst with ant pelvic tilt (which promotes hip exst),
this stretches the muscle on both sides

Question 4

what is the angle of inclination (what does it do to joint surface alignment) and normal angle for hip joint

Answer 4

optimizes joint surface alignment

120 degrees

Question 5

what is coxa vara

Answer 5

when angle of inclination is UNDER 120

Question 6

what is coxa valga

Answer 6

when angle of inclination is OVER 120

Question 7

POSITIVE things that come from coxa vara

Answer 7

coxa vara- angle below 125
It increases the moment arm for hip ABD force (which creates a greater ability to increase force)

this may improve joint stability

Question 8

NEGITIVE things that come from coxa vara

Answer 8

increased bending moment arm increases sheer force across femoral neck and decreases the functional length of hip ABD muscles

this impacts length tension relationship bc it effects the max crossbridge in the ABD muscles

Question 9

Why is positive and negitive coxa vara effects counterintuitiive and how do you deturmine which one the pt is getting

Answer 9

would depnd on degree of pts coxa vara

bc positivve increases abductor force and negitive decreases it

Question 10

What are positive effects of coxa valga

Answer 10

decreased bending moment arm which decreases sheer force acorss femoral neck and leads to increased functional length of hip abductor muscle

Question 11

What are negitive effects of coxa valga

Answer 11

decreased moment arm for hip abd force which makes joint not stable

Question 12

explain a slipped capital femoral epiphysis in adolescents

Answer 12

coxa vara with fat kid- bc increase in moment arm increases bending moment which increases shear force across femoral neck

Question 13

what is anterversion vs retroversion what where does hip normally sit?

Answer 13

related to angle of torsion
normal= anterversion

Question 14

IR/ ER relationship w anteroversion and retreovwrsion at the hip? What would each cause?

Answer 14

excessive anteversion reduces hip joint stability

retroversion may cause impingment

Question 15

where does where does shoulder usually sit anter or retroversion

Answer 15

retroversion

Question 16

what is angle of torsion and what is normal

Answer 16

noraml is 15 degrees- in anteversion

Question 17

explain “In toeing” and why kids do it

Answer 17

Question 18

acetabular abnormalitys: explain acetabular dysplasis

and does it relate to center edge angle or acetabular anteversion angle?

Answer 18

shallow acetabulum= unstable
relates to center edge angle

Question 19

acetabular abnormalitys: explain coxa profunda/ acetabular overcoverage

and does it relate to center edge angle or acetabular anteversion angle?

Answer 19

relates to center edge angle

abulum excessivly covers femoral head

Question 20

acetabular abnormalitys: explain acetabular anteversion

and does it relate to center edge angle or acetabular anteversion angle?

Answer 20

excessive anteversion can lead to instability

Question 21

acetabular abnormalitys: explain acetabular retroversion

and does it relate to center edge angle or acetabular anteversion angle?

Answer 21

excessive retroversion can lead to over coverage/ impingment

Question 22

explain cam deformity

Answer 22

impingment of the hip bc extra bone looses the tapering shape

Question 23

explain pincer deformity

Answer 23

abnormal boney exstention of anterior labral rim of acetabulim

Question 24

what does frog leg position help pediatrics diagnose and why

Answer 24

hip dysplasia bc it is the position of max congruency

Question 25

what is the point of max congruency in the hip? how is this diff from close packed position

Answer 25

ency- frog leg

Question 26

What is bending moment

Answer 26

structural adaptation to weifght bearing

Question 27

explain the structural adaptation (bending moment) to weight bearing the hip developed

Answer 27

adaptation- trabecular systems

Question 28

acetabular labrum- what does it do and where is it

Answer 28

Question 29

ligamentum teres- what does it do and where is it

Answer 29

Question 30

trnasverse ligament- what does it do and where is it

Answer 30

Question 31

pubofemoral ligament-what does it do and where is it

Answer 31

Question 32

iliofemoral ligament-what does it do and where is it

Answer 32

Question 33

Ischiofemoral ligament- what does it do and where is it

Answer 33

Question 34

explain how someone can stand like this and what ligaments help

Answer 34

- mainly Y ligament (iliofemoral) but pubofemoral and ischiofemoral also tighten

Question 35

describe the arthrokinematics of hip flexion

Answer 35

superior roll and inferior slide

Question 36

describe the arthrokinematics of hip exstention

Answer 36

Question 37

describe the arthrokinematics of hip abduction

Answer 37

Question 38

describe the arthrokinematics of hip adduction

Answer 38

Question 39

describe the arthrokinematics of hip IR

Answer 39

Question 40

describe the arthrokinematics of hip ER

Answer 40

Question 41

in a CKC what is moving on what

Answer 41

pelvis on femur

Question 42

explain foward rotation and backward rotation osteokinematicly and what both movments produce

Answer 42

Question 43

CKC pelvic tilt arthrokinematics

Answer 43

Question 44

CKC pelvic ABD and ADD arthrokinematics

Answer 44

remember youre looking at bottom to see if tis ab or ad

Question 45

does the pelvis hike or drop in bilateral stance

Answer 45

drop it CAN NOT hike bilaterally

Question 46

describe pelvic shift and what it is coupled with

Answer 46

Question 47

what position do you need to be in to produce a pelvic drop

Answer 47

unilateral

Question 48

in this figure what is happening on the right leg (L is standing leg)

Answer 48

Question 49

in R hip hiking describe the osteokinematics and arthrokinematics of left (standing) hip

Answer 49

superior roll sup slide, abduction of hip

Question 50

explain contralateral pelvic rhythem vs lumbopelvic rhthem

Answer 50

Question 51

what muscles work together as a force couple to produce ant pelvic tiit

Answer 51

hip flexior and low back exst

Question 52

what muscles work together as a force couple to produce post pelvic tiit

Answer 52

hip exst and abs

Question 53

explain what happens to the rectus abdominis and hip flexors during hip flexion in a stright lef raise

Answer 53

Question 54

what is the function of hip ER during "cutting" movments? How can this relate to an adductor sprain

Answer 54

Question 55

explain the function of the adductor longus and what can that production of power be benificial fore (what type of motion)? Does this relate to muscle strain?

Answer 55

Question 56

explain trelenberg sign

Answer 56

Question 57

Explain the role of ABD in pelvic stability

Answer 57

Question 58

explain the mechanics of walking on a cane

Answer 58

Question 59

why does carrying an exsternal load put a lot of strain on the contralateral hip?

Answer 59