Manual 114-118: Muscles of Iliac and Gluteal Region Flashcards

1
Q

origin psoas major

A
  • transverse process lumbar vertebrae
  • intervertebral discs last thoracic/all lumbar vertebrae
  • tendinous arches
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2
Q

insertion psoas major

A
  • lesser trochanter femur medial to iliacus

- bursa separates tendon from pubis and hip joint capsule

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3
Q

n psoas major

A

L2/3

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4
Q

function psoas major

A

flex hip and lumbar spine

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5
Q

where is psoas minor located?

A

anterior to psoas major

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6
Q

origin psoas minor

A

T12/L1 vertebrae and intervertebral disc

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7
Q

insertion psoas minor

A

iliopectineal eminence

iliac fascia

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8
Q

n psoas minor

A

L1

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9
Q

function psoas minor

A

flex lumbar spine

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10
Q

origin iliacus

A
  • upper 2/3 iliac fossa
  • iliac crest to ASIS/AIIS
  • superolateral ala
  • sacroiliac lig
  • iliolumbar lig
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11
Q

insertion iliacus

A

base lesser trochanter femur

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12
Q

n iliacus

A

femoral

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13
Q

function iliacus

A

flex hip

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14
Q

sometimes there is an iliacus minor (detached portion iliacus)- where does it attach?

A

0: ASIS
I: intertrochanteric line femur or iliofemoral ligament

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15
Q

vertical fibers b/w iliac crest and superior gluteus maximus

A

gluteal aponeurosis

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16
Q

origin gluteus maximus

A
  • posterior gluteal line on ilium
  • posterior surface of coccyx
  • aponeurosis sacrospinalis m
  • sacrotuberous lig
  • gluteal aponeurosis (covering m body)
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17
Q

insertion gluteus maximus

A
  • IT band (proximal/superficial fibers)

- gluteal tuberosity (deep fibers)

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18
Q

3 bursae on deep surface of gluteus maximus

A
  • greater trochanter (largest)
  • ischial tuberosity (most commonly missing)
  • b/w tendon gluteus maximus and vastus lateralis
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19
Q

n gluteus maximus

A

inferior gluteal n

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20
Q

function gluteus maximus

A

extend thigh
lateral rotate
abduct thigh

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21
Q

origin gluteus medius

A
  • outer ilium b/w iliac crest adn posteriro gluteal line posteriorly
  • anterior gluteal line anteriorly
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22
Q

insertion gluteus medius

A

oblique bony ridge greater trochanter (laterally)

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23
Q

n gluteus medius

A

superior gluteal n

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24
Q

function gluteus medius

A
  • abduct thigh
  • medially rotate an extended hip
  • anterior fibers: flex/medial rotate hip
  • posterior fibers: lateral rotate hip
  • **stabilizes the pelvis in movement
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25
Q

what structures are b/w gluteus medius and minimus?

A

superior gluteal n and deep superior gluteal vessels

26
Q

origin gluteus minimus

A
  • outer ilium b/w anterior and inferior gluteal line

- greater sciatic notch

27
Q

insertion gluteus minimus

A
  • anterior greater trochanter (there is a bursa b/w tendon and greater trochanter)
28
Q

n gluteus minimus

A

superior gluteal n

29
Q

function gluteus minimus

A
  • abduct hip
  • medially rotate extended hip
  • weak hip flexor
  • ** stabilizes pelvis during motion
30
Q

origin tensor fascia latae

A

anterior iliac crest near ASIS

31
Q

insertion tensor fascia latae

A

IT tract just distal to level of greater trochanter

- the IT attaches to the inferior lateral tibial condyle and forms part of knee capsule

32
Q

n tensor fascia latae

A

superior gluteal n

33
Q

function tensor fascia latae

A
  • medially rotate hip

- hip flexor

34
Q

insertion piriformis

A
  • superior greater trochanter posterior to obturator internus/gemelli
35
Q

n piriformis

A

S2 or S1/2

36
Q

function piriformis

A
  • lateral rotator
  • abductor of flexed hip
  • assist hip extension
37
Q

origin obturator internus

A
  • superior/inferior pubic rami
  • ischial ramus
  • ilial/ischial wall of true pelvis
  • obturator membrane
38
Q

where are the two bursa associated with obturator internus?

A
  • through lesser sciatic foramen, right angle over bone b/w spine/tuberosity of ischium
  • b/w hip joint capsule and tendon
39
Q

insertion obturator internus

A

medial greater trochanter anterior to trochanteric fossa

40
Q

n obturator internus

A

n to obturator internus (L5-S1/2)

41
Q

function obturator internus

A
  • lateral rotator
  • abductor of flexed hip
  • hip extension
42
Q

origin superior gemellus

A

outer surface ischial spine

partial fusion to obterator internus tendon

43
Q

insertion superior gemellus

A

medial greater trochanter

44
Q

n superior gemellus

A

n to obturator internus

45
Q

function superior gemellus

A

lateral rotator of hip

46
Q

larger of two gemelli

A

inferior gemellus

47
Q

origin inferior gemellus

A

superomedial ischial tuberosity

partial fusion to obturator internus tendon

48
Q

insertion inferior gemellus

A

medial greater trochanter

49
Q

n inferior gemellus

A

n to quadratus femoris

50
Q

function inferior gemellus

A

lateral rotator hip

51
Q

quadratus femoris is located b/w what two muscles

A

inferior gemellus and adductor magnus

52
Q

origin quadratus femoris

A

lateral edge ischial tuberosity

53
Q

insertion quadratus femoris

A

quadrate tubercle femur

54
Q

n quadratus femoris

A

n to quadratus femoris (L4-S1)

55
Q

function quadratus femoris

A

lateral rotator of hip

adduct hip

56
Q

m covering outer surface anterior pelvic wall

A

obturator externus

57
Q

origin obturator externus

A

ischium/pubis surrounding medial margin obturator foramen/membrane

58
Q

insertion obturator externus

A

trochnateric fossa femur

59
Q

n obturator externus

A

posterior division obturator n

60
Q

function obturator externus

A

lateral rotator hip

adduct hip