Lower Extremity OIA Flashcards

1
Q

Psoas Major Origin

A

Anterior surfaces of TPs L1-L5 and both sides of bodies T12-S1

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2
Q

Psoas Major Insertion

A

Lesser Trochanter

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3
Q

Psoas Major Action

A

Hip FLX, lumbar FLX

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4
Q

Iliacus Origin

A

superior 2/3rds iliac fossa, ala of sacrum, and anterior sacroiliac legs

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5
Q

Iliacus Insertion

A

lesser trochanter and femur shaft just distal to lesser trochanter, tendon fused with psoas major tendon

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6
Q

Iliacus Action

A

Hip FLX and trunk FLX, stabilizes the hip

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7
Q

Gluteus Maximus Origin

A

Ilium posterior gluteal, iliac crest, lateral surface of ilium, sacrum, coccyx, sacrotuberous ligament, and thoracolumbar fascia

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8
Q

Gluteus Maximus Insertion

A

Iliotibial tract and gluteal tuberosity of femur

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9
Q

Gluteus Maximus Action

A

Hip EXT, assists in ER, assists in raising trunk from flexed position, powerful ER when hip extended

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10
Q

Gluteus Medius Origin

A

anterior iliac crest, lateral surface of ilium btw posterior and anterior gluteal lines

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11
Q

Gluteus Medius Insertion

A

greater trochanter of femur

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12
Q

Gluteus Medius Action

A

hip ABD and IR

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13
Q

Gluteus Minimus Origin

A

lateral ilium btw inferior and anterior gluteal lines

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14
Q

Gluteus Minimus Insertion

A

greater trochanter of the femur

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15
Q

Gluteus Minimus Action

A

hip ABD & IR, keeps pelvis level when ipsilateral hip is WB

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16
Q

TFL Origin

A

anterior parts of iliac crests, just posterior to ASIS

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17
Q

TFL Insertion

A

descends vertically downwards to be inserted into the ITB

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18
Q

TFL Action

A

hip FLX (acts in concert with Iliopsoas and Rectus Femoris), ABD and IR of the hip

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19
Q

ITB Origin

A

tubercle of the iliac crest

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20
Q

ITB Insertion

A

lateral condyle of tibia (Gerdy’s Tubercle)

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21
Q

Piriformis Origin

A

anterior sacrum

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22
Q

Piriformis Insertion

A

greater trochanter

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23
Q

Piriformis Action

A

ER, ABD of flexed hip

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24
Q

Gemelli Superior Origin

A

Ischial spine

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25
Q

Gemelli Superior Insertion

A

trochanteric fossa

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26
Q

Gemelli Superior Action

A

ER, ABD of flexed hip

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27
Q

Gemelli Inferior Origin

A

ischial tuberosity

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28
Q

Gemelli Inferior Insertion

A

trochanteric fossa

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29
Q

Gemelli Inferior Action

A

ER, ABD of flexed hip

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30
Q

Quadratus Femoris Origin

A

ischial tuberosity

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31
Q

Quadratus Femoris Insertion

A

quadrate tubercle on Intertrochanteric Crest of femur

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32
Q

Quadratus Femoris Action

A

hip ER

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33
Q

Obturator Internus Origin

A

medial margins of obturator foramen

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34
Q

Obturator Internus Insertion

A

trochanteric fossa

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35
Q

Obturator Internus Action

A

hip ER, ABD of flexed hip

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36
Q

Obturator Externus Origin

A

lateral margins of obturator foramen

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37
Q

Obturator Externus Insertion

A

trochanteric fossa

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38
Q

Obturator Externus Action

A

hip ER

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39
Q

Sartorius Origin

A

ASIS

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40
Q

Sartorius Insertion

A

medial tibia near tibial tuberosity

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41
Q

Sartorius Action

A

Hip: ABD, ER, FLX
Knee: FLX
medially rotates the lower leg when knee is flexed

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42
Q

Rectus Femoris Origin

A

AIIS

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43
Q

Rectus Femoris, Vastus Intermedius, Vastus Lateralis, Vastus Medialis Insertion

A

tibial tuberosity via quadriceps tendon, patella, and patellar ligament

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44
Q

Rectus Femoris, Vastus Intermedius, Vastus Lateralis, Vastus Medialis Action

A

EXT of the knee

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45
Q

Vastus Intermedius Origin

A

anterolateral surface of femus

46
Q

Vastus Lateralis Origin

A

greater trochanter and along lateral lip of linea aspera

47
Q

Vastus Medialis Origin

A

entire medial lip of linea aspera

48
Q

Biceps Femoris Origin

A

Long Head: ischial tuberosity
Short Head: linea aspera

49
Q

Biceps Femoris Insertion

A

head of fibula

50
Q

Biceps Femoris Action

A

hip: EXT
knee: FLX and ER (of lower leg when knee is flexed)

51
Q

Semimembranosus Origin

A

ischial tuberosity, passes downward and medially in front of the biceps and semitendiosus

52
Q

Semimembranosus Insertion

A

by the flat tendon to the semimembranosus groove on the back of the medial condyle of tibia

53
Q

Semimembranosus Action

A

hip: EXT
knee: FLX (and IR of the lower leg when knee flexed)

54
Q

Semitendinosus Origin

A

Ischial tuberosity, by tendon common to long head of biceps

55
Q

Semitendinosus Insertion

A

medial surface of tibia close to the insertion of gracilis (Pes anserinus = SemiT+gracilis+sartorius)

56
Q

Semitendinosus Action

A

hip: EXT
knee: FLX (and IR of the lower leg when knee flexed)

57
Q

Pectineus Origin

A

superior ramus of pubis (pectineal line)

58
Q

Pectineus Insertion

A

pectineal line just inferior to lesser trochanter of femur

59
Q

Pectineus Action

A

ADD, FLX of hip

60
Q

Adductor Longus Origin

A

pubis

61
Q

Adductor Longus Insertion

A

linea aspera

62
Q

Adductor Longus Action

A

ADD, FLX of hip

63
Q

Adductor Brevis Origin

A

body of inferior ramus of pubis anteriorly to ADD Magnus

64
Q

Adductor Brevis Insertion

A

linea aspera, pectineal line

65
Q

Adductor Brevis Action

A

ADD and FLX of hip

66
Q

Gracilis Origin

A

inferior ramus of pubic bone, very close to the symphysis pubis, medial to ADD Brevis attachment

67
Q

Gracilis Insertion

A

medial superior surface of tibia, inferior to medial condyle

68
Q

Gracilis Action

A

Hip: ADD and FLX of hip

69
Q

Adductor Magnus Origin

A

Inferior ramus of pubis posterior to ADD Brevis and to ischial tuberosity

70
Q

Adductor Magnus Insertion

A

Adductor Part: linea aspera and gluteal tuberosity of femur, medial supracondylar line
Hamstring Part: adductor tubercle of femur

71
Q

Adductor Magnus Action

A

ADD and FLX (adductor part) or ADD EXT (hamstring part)

72
Q

Tibialis Anterior Origin

A

lateral condyle of tibia, interosseous membrane

73
Q

Tibialis Anterior Insertion

A

medial cuneiform, base of 1st metatarsal

74
Q

Tibialis Anterior Action

A

ankle dorsiflexion and inversion, helps to maintain the medial arch of the foot during walking

75
Q

Extensor Digitorum Longus Origin

A

lateral tibial condyle, fibular shaft, interosseous membrane

76
Q

Extensor Digitorum Longus Insertion

A

middle and distal phalanges of toes 2-5

77
Q

Extensor Digitorum Longus Action

A

extends lateral 4 toes, ankle DF

78
Q

Fibularis Tertius Origin

A

inferior surface of fibula, adjacent anterior surface of interosseous membrane

79
Q

Fibularis Tertius Insertion

A

dorsal base and shaft of 5th metatarsal

80
Q

Fibularis Tertius Action

A

ankle DF and helps in eversion

81
Q

Extensor Hallucis Longus Origin

A

anterior surface of interosseous membrane, middle half of anterior surface of fibula

82
Q

Extensor Hallucis Longus Insertion

A

dorsal surface of base of distal phalanx of great toe

83
Q

Extensor Hallucis Longus Action

A

extends MTP and IP joints great toe, assists in ankle DF

84
Q

Fibularis Longus Origin

A

head of fibula, lateral fibular shaft

85
Q

Fibularis Longus Insertion

A

medial cuneiform, 1st metatarsal

86
Q

Fibularis Longus Action

A

ankle eversion and PF

87
Q

Fibularis Brevis Origin

A

inferior lateral surface of fibula

88
Q

Fibularis Brevis Insertion

A

tuberosity of the base of the fifth metatarsal

89
Q

Fibularis Brevis Action

A

Ankle eversion and weak PF

90
Q

Gastrocnemius Origin

A

Lateral Head: lateral condyle of femur
Medial Head: posterior surface medial femoral condyle

91
Q

Gastrocnemius Insertion

A

posterior calcaneus via Achilles tendon

92
Q

Gastrocnemius Action

A

knee flexor and ankle PF (cannot do both at the same time)

93
Q

Soleus Origin

A

posterior aspect of fibular head, posterior fibula, soleal line on tibia, tibial shaft

94
Q

Soleus Insertion

A

posterior calcaneus via Achilles tendon

95
Q

Soleus Action

A

ankle PF

96
Q

Plantaris Origin

A

lateral supracondylar line of femur

97
Q

Plantaris Insertion

A

blends with Achilles to insert on posterior calcaneus

98
Q

Plantaris Action

A

Weak knee flexor and ankle PF

99
Q

Popliteus Origin

A

lateral femoral condyle

100
Q

Popliteus Insertion

A

posterior surface of tibia, superior to popliteal line

101
Q

Popliteus Action

A

flexes knee (weak), medial tibial rotation in OKC position, lateral femur rotation in CKC position, when the knee is extended fully a lateral rotation of the tibia locks the knee joint. In order to unlock it the popliteus acts by rotating tibia medially at the beginning of flexion

102
Q

Tibialis Posterior Origin

A

posterior interosseous membrane, posterior shaft of fibula, posterior aspect of superior tibia inferior to the soleal line

103
Q

Tibialis Posterior Insertion

A

crosses posterior medial malleolus (enters the foot above the sustentaculum tali. Navicular bone, all 3 cuneiforms, cuboid, 3rd and 4th MT bones

104
Q

Tibialis Posterior Action

A

ankle PF, inversion

105
Q

Flexor Digitorum Longus Origin

A

Posterior surface of tibia, just distal to soleal line

106
Q

Flexor Digitorum Longus Insertion

A

passes posterior to medial malleolus, inserts on plantar surfaces pf bases of distal phalanges of lateral 4 toes

107
Q

Flexor Digitorum Longus Action

A

helps in ankle PF, flexes IP and MTP joints lateral 4 toes

108
Q

Flexor Hallucis Longus Origin

A

posterior fibular below the soleal line

109
Q

Flexor Hallucis Longus Insertion

A

plantar base of distal phalanx of great toe

110
Q

Flexor Hallucis Longus Action

A

flexes IP and ATP of great toe, helps to PF the ankle