LL Muscles Flashcards

1
Q

What is the origin of the iliopsoas?

A

iliacus and psoas major

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2
Q

What is the insertion of the iliopsoas?

A

ilicus and psoas major

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3
Q

What is the action of the iliopsoas?

A

flexes, laterally rotates, abducts hip

extends lumbar spine

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4
Q

What is the innervation of the iliopsoas?

A

femoral nerve

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5
Q

Name the hip adductors.

A
pectineus
adductor magnus
adductor longus
adductor brevis
gracilis
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6
Q

What is the origin of the pectineus?

A

pubis

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7
Q

What is the insertion of the pectineus?

A

femur

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8
Q

What is the action of the pectineus?

A

hip add.

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9
Q

What is the innervation of the pectineus?

A

femoral and obturator nerves

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10
Q

What is the origin of the adductor magnus?

A

pubic ramus, ramus of ischium, ischial tuberosity

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11
Q

What is the insertion of the adductor magnus?

A

gluteal tuberosity

linea aspera

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12
Q

What is the action of the adductor magnus?

A

hip add.

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13
Q

What is the innervation of the adductor magnus?

A

obturator and sciatic nerves

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14
Q

What is the origin of the adductor longus?

A

pubis

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15
Q

What is the insertion of the adductor longus?

A

linea aspera

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16
Q

What is the action of the adductor longus?

A

hip add.

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17
Q

What is the innervation of the adductor longus?

A

obturator nerve

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18
Q

What is the origin of the adductor brevis?

A

pubic ramus

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19
Q

What is the insertion of the adductor brevis?

A

linea aspera

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20
Q

What is the action of the adductor brevis?

A

hip add.

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21
Q

What is the innervation of the adductor brevis?

A

obturator nerve

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22
Q

What is the origin of the gracilis?

A

symphysis pubis, pubis ramus

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23
Q

What is the insertion of the gracilis?

A

tibia

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24
Q

What is the action of the gracilis?

A

hip add.
hip flexion
medial rotation of knee

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25
Q

What is the innervation of the gracilis?

A

obturator nerve

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26
Q

athletic pubalgia

A

sports hernia

hip add. or rectus abdominus avulsion

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27
Q

What is the origin of the gluteus maximus?

A

ilium and sacrum

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28
Q

What is the insertion of the gluteus maximus?

A

IT band and femur

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29
Q

What is the action of the gluteus maximus?

A

extends/laterally rotates hip

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30
Q

What is the innervation of the gluteus maximus?

A

gluteal nerve

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31
Q

What is the origin of the gluteus medius?

A

ilium

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32
Q

What is the insertion of the gluteus medius?

A

greater trochanter

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33
Q

What is the action of the gluteus medius?

A

abd. hip

medial rot/flexion of hip

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34
Q

What is the innervation of the gluteus medius?

A

gluteal nerve

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35
Q

trendelenburg gait

A

weakness in gluetus medius

same side trunk lean during gait

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36
Q

What is the origin of the gluteus minimus?

A

ilium

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37
Q

What is the insertion of the gluteus minimus?

A

greater trochanter

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38
Q

What is the action of the gluteus minimus?

A

abd./med rot. hip

minimal flexion

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39
Q

What is the innervation of the gluteus minimus?

A

superior gluteal nerve

40
Q

What is the origin of the piriformis?

A

sacrum

41
Q

What is the insertion of the piriformis?

A

greater trochanter

42
Q

What is the action of the piriformis?

A

lateral rotation/extension of hip

43
Q

What is the innervation of the piriformis?

A

sacral plexus

44
Q

What is a common genetic difference in piriformis?

A

sciatic nerve pierces muscle in about 20% population

45
Q

piriformis syndrome

A

numbness and tingling down leg
more common in females
rehab, medication, and surgery

46
Q

What is the origin of the quadratus femoris?

A

ischium tuberosity

47
Q

What is the insertion of the quadratus femoris?

A

quadrate line

48
Q

What is the action of the quadratus femoris?

A

lateral hip rotation

49
Q

What is the innervation of the quadratus femoris?

A

sacral plexus

50
Q

What is the origin of the obturator internus?

A

obturator foramen

51
Q

What is the insertion of the obturator internus?

A

greater trochanter

52
Q

What is the action of the obturator internus?

A

lateral hip rotation

53
Q

What is the innervation of obturator internus?

A

sacral plexus

54
Q

What is the origin of the obturator externus?

A

pubic and ischial rami

55
Q

What is the insertion of the obturator externus?

A

trochanteric fossa

56
Q

What is the action of the obturator externus?

A

lateral hip flexion

57
Q

What is the innervation of obturator externus?

A

obturator nerve

58
Q

What is the origin of the gemellus superior?

A

ischium

59
Q

What is the insertion of the gemellus superior?

A

greater trochanter

60
Q

What is the action of the gemellus superior?

A

lateral hip rotation

61
Q

What is the innervation of gemellus superior?

A

sacral plexus

62
Q

What is the origin of the gemellus inferior?

A

ischial tuberosity

63
Q

What is the insertion of the gemellus inferior?

A

greater trochanter

64
Q

What is the action of the gemellus inferior?

A

lateral hip rotation

65
Q

What is the innervation of gemellus inferior?

A

sacral plexus

66
Q

What happens when the lateral rotators are not working well?

A

internal knee rotation (valgus)

67
Q

What is the origin of the sartorius?

A

ASIS

68
Q

What is the insertion of the sartorius?

A

tibia

69
Q

What is the action of the sartorius?

A

flexes, laterally rotates, and abducts hip

assists with knee flexion and medial rotation

70
Q

What is the innervation of the sartorius?

A

femoral nerve

71
Q

What is the origin of the tensor fascia latae?

A

ASIS

72
Q

What is the insertion of the tensor fascia latae?

A

IT band

73
Q

What is the action of the tensor fascia latae?

A

flexes/medially rotates/abducts hip

74
Q

What is the innervation of the tensor fascia latae?

A

superior gluteal

75
Q

Name the muscles of the posterior thigh.

A

Semimembranosus, semitendinosus, biceps femoris, quadriceps femoris

76
Q

What is the origin of the semimembranosus?

A

ischial tuberosity

77
Q

What is the insertion of the semimembranosus?

A

tibial condyle

78
Q

What is the action of the semimembranosus?

A

flexes/medially rotates knee

extends and medially rotates hip

79
Q

What is the innervation of the semimembranosus?

A

sciatic

80
Q

What is the origin of the semitendinosus?

A

ischial tuberosity

81
Q

What is the insertion of the semitendinosus?

A

tibia

82
Q

What is the action of the semitendinosus?

A

flexes/medially rotates knee

extends/medially rotates hip

83
Q

What is the innervation of the semitendinosus?

A

sciatic

84
Q

What is the origin of the biceps femoris?

A

ischial tuberosity (long) and supracondylar line (short)

85
Q

What is the insertion of the biceps femoris?

A

fibula

86
Q

What is the action of the biceps femoris?

A

flexes/medially rotates knee

extends/medially rotates hip

87
Q

What is the innervation of the biceps femoris?

A

sciatic

88
Q

List the parts of the quadriceps femoris.

A

rectus femoris, vastus lateralis, vastus intermediatlis, vastus medialis

89
Q

What is the origin of the rectus femoris?

A

iliac spine

90
Q

What is the origin of the vastus lateralis?

A

intertrochantic line/greater trochanter

91
Q

What is the origin of the vastus intermedialis?

A

femur

92
Q

What is the origin of the vastus medialis?

A

intertrochanteric line

93
Q

What is the insertion of all of the quadriceps femoris?

A

patella to patellar ligament to tibial tuberosity

94
Q

What is the action of the quadriceps?

A

extension at the knee

rectus femoris also assists with flexion at hip

95
Q

What is the innervation of the quadriceps?

A

femoral nerve