Posterior Thigh, Gluteal Region Flashcards

1
Q

gluteus muscles anterior to posterior

A

gluteus minimus
gluteus medius
gluteus maximus

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2
Q

muscles that steady the femoral head in acetabulum

A
the short external rotators of the hip
(piriformis
obturator internus
superior gemellulus
inferior gemellus
quadratus femorus
obturator externus)
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3
Q

short external rotators of the hip

A
piriformis
obturator internus
superior gemellulus
inferior gemellus
quadratus femorus
obturator externus
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4
Q

action of all of the short external hip rotators

A

externally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

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5
Q

muscle that is an extremely important surgical landmark in femur fracture repairs

A

piriformis

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6
Q

all deep nerves of the gluteal region pass inferior to piriformis except:

A

superior gluteal nerve (passes superiorly)

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7
Q

nerve that supplies the gluteus medius and minimus

A

superior gluteal nerve

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8
Q

separates buttocks from each other

A

natal cleft

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9
Q

groove that marks the lower limit of buttock and upper limit of thigh

A

gluteal sulcus

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10
Q

connects ischial tuberosity to sacrum

A

sacrotuberous ligament

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11
Q

passageway for structures entering and leaving the pelvis (like the sciatic nerve)

A

sacrotuberous ligament

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12
Q

connects sacrum and ischial spine

A

sacrospinous ligament

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13
Q

converts greater sciatic notch into greater sciatic foramen

A

sacrotuberous ligament

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14
Q

converts lesser sciatic notch to lesser sciatic foramen

A

sacrospinous ligament

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15
Q

passageway for structures entering and leaving perineum

A

sacrospinous ligament

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16
Q

innervates gluteus maximus

A

inferior gluteal nerve

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17
Q

innervates gluteus medius

A

superior gluteal nerve

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18
Q

innervates gluteus minimus

A

superior gluteal nerve

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19
Q

innervates the piriformis

A

branches of ventral rami of S1, S2

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20
Q

action of gluteus maximus

A
extend thigh (especially from flexed position)
assist in external rotation of thigh
steady thigh, assist in rising from sitting position
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21
Q

action of gluteus medius

A

abduct and internally rotate thigh

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22
Q

action of gluteus minimus

A

abduct and internally rotate thigh

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23
Q

action of piriformis

A

externally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

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24
Q

innervates the obturator internus

A

nerve to obturator internus

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25
Q

attachments of obturator internus

A

obturator membrane & greater trochanter

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26
Q

superior gemellus innervation

A

nerve to obturator internus

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27
Q

action of superior gemellus

A

externally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

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28
Q

muscles that steady femoral head in acetabulum

A
superior gemellus
obturator internus
piriformis
inferior gemellus
quadratus femoris
obterator externus
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29
Q

action of inferior gemellus

A

externally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

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30
Q

action of quadratus femoris

A

externally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

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31
Q

innervates quadratus femoris

A

nerve to quadratus femoris

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32
Q

action of obturator externus

A

externally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

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33
Q

innervates obturator externus

A

obturator nerve

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34
Q

supply skin over gluteal region as far as the greater trochanter

A

superior cluneal nerves

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35
Q

supply skin and subcutaneous tissue over sacrum and adjacent area of buttock

A

middle cluneal nerves

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36
Q

muscles that make up the hamstrings

A

adductor magnus (hamstrings part)
biceps femoris (short and long heads)
semitendinosus
semimembranosus

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37
Q

only hamstring muscle that doesn’t cross the hip joint

A

biceps femoris short head

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38
Q

attachments of gluteus maximus

A

proximal: ilium, sacrum, coccyx
distal: most fibers end in iliotibial tract that inserts into lateral condyle of tibia; some insert on gluteal tuberosity

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39
Q

innervation of gluteus maximus

A

inferior gluteal nerve

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40
Q

action of gluteus maximus

A

extend thigh & assist in lateral rotation
steady thigh
assist in rising from sitting position
also helps stabilize knee d/t attachment on ITB

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41
Q

attachments of gluteus medius

A

proximal: ilium
distal: greater trochanter

42
Q

innervation of gluteus medius

A

superior gluteal nerve

43
Q

action of gluteus medius

A

abduct and medially rotate thigh

keep pelvis level when opposite leg raised

44
Q

attachments of piriformis

A

proximal: sacrum
distal: greater trochanter

45
Q

innervation of piriformis

A

branches of ventral rami of S1, S2

46
Q

action of piriformis

A

laterally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

47
Q

attachments of obturator internus

A

proximal: pelvic surface of obturator membrane
distal: greater trochanter

48
Q

innervation of obturator internus

A

nerve to obturator internus

49
Q

actions of obturator internus

A

laterally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

50
Q

attachments of superior gemellus

A

proximal: ischial spine
distal: greater trochanter (blends with obturator internus)

51
Q

innervation of superior gemellus

A

nerve to obturator internus

52
Q

actions of superior gemellus

A

laterally rotate extended thigh
abduct extended thigh
steady femoral head in acetabulum

53
Q

attachments of inferior gemellus

A

proximal: ischial tuberosity
distal: greater trochanter (blends with obturator internus)

54
Q

innervation of inferior gemellus

A

nerve to quadratus femoris

55
Q

action of inferior gemellus

A

laterally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

56
Q

attachments of quadratus femoris

A

proximal: ischial tuberosity
distal: quadrate tubercle (femur)

57
Q

innervation of quadratus femoris

A

nerve to quadratus femoris

58
Q

action of quadratus femoris

A

laterally rotate extended thigh
abduct flexed thigh
steady femoral head in acetabulum

59
Q

where do the superior and inferior gluteal nerves leave the pelvis

A

through greater sciatic foramen

60
Q

does the sciatic nerve itself supply any muscles in gluteal region?

A

no - superior and inferior gluteal nerves do

61
Q

supplies more skin than any other cutaneous nerve

A

posterior femoral cutaneous nerve

62
Q

what muscles does the nerve to obturator innervate

A

superior gemellus

obturator internus

63
Q

what muscles are innervated by the nerve to quadratus femoris

A

inferior gemellus

quadratus femoris

64
Q

what nerve supplies most superficial sensory innervation in perineum

A

pudendal nerve

65
Q

largest branch of internal iliac artery

A

superior gluteal artery

66
Q

artery that the inferior gluteal artery branches off of

A

internal iliac artery

67
Q

attachments of the biceps femoris long head

A

proximal: ischial tuberosity
distal: fibula

68
Q

innervation of biceps femoris long head

A

tibial division of sciatic nerve

69
Q

actions of biceps femoris long head

A

flex leg
laterally rotate leg when knee flexed
extend thigh at hip

70
Q

attachments of the biceps femoris short head

A

proximal: linear aspera
distal: fibula

71
Q

innervation of biceps femoris short head

A

common fibular division of sciatic nerve

72
Q

action of biceps femoris short head

A

flex leg

rotate leg laterally

73
Q

attachments of semitendinosus

A

proximal: ischial tuberosity
distal: tibia

74
Q

innervation of semitendinosus

A

tibial division of sciatic nerve

75
Q

action of semitendinosus

A

extend thigh
flex leg
rotate leg medially with knee flexed

76
Q

attachments of semimembranosus

A

proximal: ischial tuberosity
distal: medial tibial condyle

77
Q

innervation of semimembranosus

A

tibial division of sciatic nerve

78
Q

actions of semimembranosus

A

extend thigh

flex leg and rotate medially when knee flexed

79
Q

attachments of adductor magnus - adductor part

A

proximal: pubis, ischium
distal: gluteal tuberosity, linea aspera, medial supracondylar line

80
Q

innervation of adductor magnus - adductor part

A

obturator nerve, posterior division

81
Q

action of adductor magnus

A

adduct thigh

82
Q

action of adductor magnus - adductor part

A

flex thigh

83
Q

attachments of adductor magnus - hamstrings part

A

proximal: ischial tuberosity
distal: adductor tubercle of femur

84
Q

innervation of adductor magnus - hamstrings part

A

tibial part of sciatic nerve

85
Q

action of adductor magnus - hamstrings part

A

extend thigh

86
Q

largest branch of femoral artery

A

profunda femoris artery (deep femoral artery)

87
Q

branches of deep femoral artery that supply thigh muscles and proximal femur

A

circumflex femoral arteries

88
Q

contents of the popliteal fossa

A

popliteal artery
popliteal vein
tibial and common fibular nerves
small saphenous vein
popliteal lymph nodes and lymphatic vessels
posterior cutaneous nerve of the thigh
medial and lateral sural cutaneous nerves

89
Q

after the femoral artery passes through the adductor hiatus, it becomes:

A

popliteal artery

90
Q

where does the popliteal vein become the femoral vein

A

at the adductor hiatus

91
Q

nerve commonly injured due to its close proximity to fibular head and neck

A

common fibular (peroneal) nerve

92
Q

attachments of the popliteus

A

proximall: lateral condyle of femur
distal: tibia

93
Q

innervation of popliteus

A

tibial nerve

94
Q

actions of popliteus

A

weakly flex knee

95
Q

attachments of plantaris

A

proximal: lateral supracondylar ridge of femur
distal: tendo calcaneus

96
Q

innervation of the plantaris

A

tibial nerve

97
Q

action of plantaris

A

plantar flex foot

flex knee

98
Q

attachments of the gastrocnemius

A

proximal: lateral head - lateral condyle of femur
medial head - femur above medial condyle
distal: tendo calcaneus

99
Q

innervation of gastrocnemius

A

tibial nerve

100
Q

actions of gastrocnemius

A

plantarflex foot

flex knee

101
Q

only hamstring muscle that doesn’t cross the knee

A

adductor magnus (hamstring part)