hip arthrology-exam 2 Flashcards by Demond Fleming

mm. origin and insertion:
1. glute max (2)
2. rectus femoris
3. glute med/min
4. hamstrings
5. adductor magnus
6. TFL on pelvis

o: pos. ilium; i: gluteal tuberosity
o: ASIS; i: tibial tuberosity
o: ilium; i: greater trochanter
o: ischial tub.; i: tibia
o: inf. pubic ramus; i: gluteal tuberosity
o: ASIS; i: tubercle of iliotibial tract

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coxa vara the hip bend ________
<______º

coxa valga the hip bend ________
> _________º

inward; <125º
outward >125º

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Anteversion is excessive______ rotation and can be seen in pts. w/

internal rotation; coxa vara; genu valgum

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Retroversion is excessive ____ rotation

ERot

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deep cup-like socket:

acetabulum

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Acetabular notch ___-___º opening
Acetabular fossa is the_______ of the fossa, no_________, no ______
filled w/ _________(5)

60-70º
floor; no cartilage, no contact
fat/blood, vessels/synovial membrane/ lig

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The femoral head normally contacts the acetabulum ONLY along ____________

lunate surface

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lunate surface is covered in ____________ and thickest along _____ region matching area of highest joint ________

articular cartilage; sup-ant. region; force

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Forces 13% swing to ______% BW in midstance
The area of joint contact increases from about _____% of lunate surface during the _______ phase to about ________% during __________ phase

300%
20%; swing phase, 98% mid-stance

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acetabular labrum:

strong, flexible ring of fibrocartilage rim of the acetabulum
provides mechanical stability ‘grip’ and deepens the socket
mechanical seal keeps negative pressure, fluid sealed
poorly vascularized but well innervated (pain & proception)

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Capsule contains synovial membrane T or F?

True

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Which ligaments reinforce the external capsule iliocapsularis, glutes minimus, and rectus femoris

lliofemoral, pubofemoral, ischiofemoral

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iliofemoral ligament:

thick strong upside down “Y” med and lat: AIIS/rim of acetabulem to introchaneric line, full hip ext also full Erot elongates it

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Pubofemoral ligament:

taught in hip aBd/ext and a bit in Erot.

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Ischiofemoral ligament:

post. spirals, taught in Irot and aBd

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Osteokinematics: Femoral-on-Pelvic

femur about a fixed pelvis

Osteokinematics: Pelvic-on-Femoral

rotation of the pelvic over fixed femurs

Pelvic on Femoral and Femoral on Pelvic may often occur simultaneously. T or F

True

Capsular Pattern CPP:

the greatest simultaneous stretch to many structures: full ext (20º)/ slight Irot and aBd
-least amount of joint “play”
-hip has no max joint congruency
– which is 90º flx, / mod. aBd and Erot
—(femoral head seated best)

Femoral-on-Pelvic: Sagittal Plane

Hip Flexion _____-______º and after usually leads to into _______ and ______
With LE extended ____-____º (________ tension)
Hip extension: _____-_____º

120-140º; posterior pelvic tilt; lumbar flexion
70-80º ; hamstring
18-30º

Femoral-on-Pelvic: Frontal Plane
aBd: ____-____º limited by _______ lig and ______mm’s
aDd: ____-_____º limited by _____,______,______mm’s

40-55º; pubofemoral; adductor
20-25º; aBd/piriformis/ITB

Femoral-on-Pelvic: Transverse Plane
IRot: ____-_____º and ERot ____-____º

30-45º
32-50º (> than IR)

What are the two types of lumbopelvic rhythm:

ipsidirectional and Contradirectional

Ipsidirectional:

lumbar spine and pelvis move in the same direction; maximizing angular displacement of the entire trunk.

Contradirrectional:

lumbar spine and pelvis move in opposite directions, supra lumbar (above L1) can stay nearly stationary used in walking where head and eyes need to be still.

Pelvic rotation in contradirectional: Sagittal Plane motions:

hip flx/ ant. pelvic tilt/ lumbar spine ext hip ext/post. pelvic tilt/ lumbar spine flex

Pelvic rotation in contradirectional: Frontal Plane -aBd support hip __________-----> opposite iliac crest ______----> opposite side spine _________ - aDd is _______ -structures that limit aBd/aDd

-in standing; hikes; lateral flexion (SB) -opposite -aBd: (adductors/ pubofemoral lig) -aDd: (ITB/piriformis/ aBductors)

What pelvic rhythm occurs when walking?

contradirectional

What is happening in the osteokinematics of a soccer kick?

what is occuring at the hip when the non support LE rotates forward?

internal rotation of the hip

what is occuring when the non support LE rotates backward?

external rotation of the hip

in NWB/open chain hip adduction, what are the arthrokinematics?

convex on concave femoral head rolls medial and glides lateral

in WB/closed chain hip adduction, what are the arthrokinematics?

concave on convex acetabulum/pelvis roll medial and glide medial

malformed, does not fully cover the femoral head

dysplastic acetabulum

Acetabular Alignment: the degree to which it faces anteriorly -

acetabular anteversion angle