Lower Extremity OIIA's Flashcards

1
Q

Origin: Gluteus maximus

A

-Ilium
-Posterior gluteal line
-Dorsal surface of sacrum & coccyx
-Sacrotuberous ligament

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2
Q

Insertion: Gluteus maximus

A

-IT band
-Gluteal tuberosity

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3
Q

Innervation: Gluteus maximus

A

Inferior gluteal nerve (L5-S2)

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4
Q

Action: Gluteus maximus

A

Extension and external rotation of hip

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5
Q

Origin: Gluteus medius

A

Between anterior and posterior gluteal lines

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6
Q

Insertion: Gluteus medius

A

Lateral surface of greater trochanter

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7
Q

Innervation: Gluteus medius

A

Superior gluteal nerve (L4-S1)

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8
Q

Action: Gluteus medius

A

-Abduction of femur
-Keeps pelvis level when ipsilateral limb is weight bearing
-Internal rotation

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9
Q

Origin: Gluteus minimus

A

Between inferior and anterior gluteal lines

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10
Q

Insertion: Gluteus minimus

A

Antero-lateral aspect of the greater trochanter

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11
Q

Innervation: Gluteus minimus

A

Superior gluteal nerve (L4-S1)

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12
Q

Action: Gluteus minimus

A

-Abduction of femur
-Internal rotation
-Keeps pelvis level when ipsilateral limb is weight bearing

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13
Q

Origin: Tensor fascia lata (TFL)

A

ASIS

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14
Q

Insertion: Tensor fascia lata (TFL)

A

IT band

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15
Q

Innervation: Tensor fascia lata (TFL)

A

Superior gluteal nerve (L4-S1)

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16
Q

Action: Tensor fascia lata (TFL)

A

-Abduction
-Internal rotation
-Stabilizes the knee

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17
Q

Origin: Piriformis

A

Anterior surface of sacrum between S1-S4

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18
Q

Insertion: Piriformis

A

Superior border of greater trochanter

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19
Q

Innervation: Piriformis

A

Spinal nerves L5-S2

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20
Q

Action: Piriformis

A

-External rotation of extended thigh
-Abduction of flexed thigh
-Steadies femoral head in acetabulum

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21
Q

Origin: Obturator internus

A

Inner surface of the obturator foramen

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22
Q

Insertion: Obturator internus

A

Medial surface of the greater trochanter

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23
Q

Innervation: Obturator internus

A

Spinal nerves L5-S2

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24
Q

Action: Obturator internus

A

-External rotates extended hip
-Abducts flexed thigh
-Steadies femoral head in acetabulum

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25
Q

Origin: Obturator externus

A

External surface of obturator foramen

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26
Q

Insertion: Obturator externus

A

Trochanteric fossa of femur

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27
Q

Innervation: Obturator externus

A

Obturator nerve (L3, L4)

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28
Q

Action: Obturator externus

A

-External rotation of extended hip
-Abduction of flexed thigh

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29
Q

Origin: Superior & inferior gemellus

A

-Superior: ischial spine
-Inferior: ischial tuberosity

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30
Q

Insertion: Superior & inferior gemellus

A

Medial surface of greater trochanter

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31
Q

Innervation: Superior & inferior gemellus

A

Spinal nerves L5-S1

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32
Q

Action: Superior & inferior gemellus

A

-External rotation of extended thigh
-Abducts flexed thigh
-Stabilizes the hip

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33
Q

Origin: Quadratus femoris

A

Lateral border of ischial tuberosity

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34
Q

Insertion: Quadratus femoris

A

Intertrochanteric crest of the femur

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35
Q

Innervation: Quadratus femoris

A

Spinal nerves L5-S1

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36
Q

Action: Quadratus femoris

A

Externally rotates the hip

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37
Q

Origin: Psoas major

A

Sides of T12-L5 & intervertebral discs

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38
Q

Insertion: Psoas major

A

Lesser trochanter

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39
Q

Innervation: Psoas major

A

Spinal nerves L1-S3

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40
Q

Action: Psoas major

A

Flexes thigh and trunk

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41
Q

Origin: Iliacus

A

Iliac fossa

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42
Q

Insertion: Iliacus

A

Lesser trochanter

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43
Q

Innervation: Iliacus

A

Femoral nerve (L2-L3)

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44
Q

Action: Iliacus

A

Flexes thigh and trunk

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45
Q

Origin: Sartorius

A

ASIS

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46
Q

Insertion: Sartorius

A

Medial superior shaft of tibia- Pes Anserinus

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47
Q

Innervation: Sartorius

A

Femoral nerve (L2, L3)

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48
Q

Action: Sartorius

A

Flexes the thigh and flexes the leg

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49
Q

Origin: Rectus femoris

A

AIIS

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50
Q

Insertion: Rectus femoris

A

Quadriceps tendon

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51
Q

Innervation: Rectus femoris

A

Femoral nerve (L2, L3)

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52
Q

Action: Rectus femoris

A

Extends the leg and flexes the hip

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53
Q

Origin: Vastus lateralis

A

Greater trochanter

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54
Q

Insertion: Vastus lateralis

A

Quadriceps tendon

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55
Q

Innervation: Vastus lateralis

A

Femoral nerve (L2-L4)

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56
Q

Action: Vastus lateralis

A

Extends the leg

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57
Q

Origin: Vastus medialis

A

Intertrochanteric line and linea aspera

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58
Q

Insertion: Vastus medialis

A

Quadriceps tendon

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59
Q

Innervation: Vastus medialis

A

Femoral nerve (L2-L4)

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60
Q

Action: Vastus medialis

A

Extends the leg

61
Q

Origin: Vastus intermedius

A

Intertrochanteric line of femur and upper 2/3 of the anterior surface of the femur

62
Q

Insertion: Vastus intermedius

A

Quadriceps tendon

63
Q

Innervation: Vastus intermedius

A

Femoral nerve (L2-L4)

64
Q

Action: Vastus intermedius

A

Extends the leg

65
Q

Origin: Biceps femoris long head

A

Ischial tuberosity

66
Q

Insertion: Biceps femoris long head

A

Lateral tibia, head of fibula

67
Q

Innervation: Biceps femoris long head

A

Tibial nerve (S1-S3)

68
Q

Action: Biceps femoris long head

A

thigh extension & knee flexion

69
Q

Origin: Biceps femoris short head

A

Linea aspera

70
Q

Insertion: Biceps femoris short head

A

Lateral tibia, head of fibula

71
Q

Innervation: Biceps femoris short head

A

Common fibular nerve (L5-S2)

72
Q

Action: Biceps femoris short head

A

thigh extension & knee flexion

73
Q

Origin: Semitendinosus & Semimembranosus

A

Ischial tuberosity

74
Q

Insertion: Semitendinosus & Semimembranosus

A

-Semitendinosus: Pes anserinus
-Semimembranosus: medial condyle of tibia

75
Q

Innervation: Semitendinosus & Semimembranosus

A

Tibial nerve (L5-S2)

76
Q

Action: Semitendinosus & Semimembranosus

A

Thigh extension & knee flexion

77
Q

Origin: Adductor longus

A

Body of pubis close to the symphysis

78
Q

Insertion: Adductor longus

A

Linea aspera of femur

79
Q

Innervation: Adductor longus

A

Obturator nerve (L3, L4)

80
Q

Action: Adductor longus

A

Adducts & internally rotates thigh

81
Q

Origin: Adductor brevis

A

inferior pubic ramus close to the symphysis

82
Q

Insertion: Adductor brevis

A

Upper part of the linea aspera of femur

83
Q

Innervation: Adductor brevis

A

Obturator nerve (L3, L4)

84
Q

Action: Adductor brevis

A

Adducts thigh

85
Q

Origin: Adductor magnus

A

Inferior ramus of pubis, inferior ramus of ischium, and ischial tuberosity

86
Q

Insertion: Adductor magnus

A

Linea aspera of femur & supracondylar line

87
Q

Innervation: Adductor magnus

A

Obturator nerve (L3, L4) and branches from the sciatic

88
Q

Action: Adductor magnus

A

Adducts thigh

89
Q

Origin: Gracilis

A

Inferior ramus of pubis

90
Q

Insertion: Gracilis

A

Pes anserinus

91
Q

Innervation: Gracilis

A

Obturator nerve (L3, L4)

92
Q

Action: Gracilis

A

Adducts & flexes leg

93
Q

Origin: Pectineus

A

Superior pubic ramus

94
Q

Insertion: Pectineus

A

Pectineal line of femur

95
Q

Innervation: Pectineus

A

Femoral nerve (L2-L4)

96
Q

Action: Pectineus

A

Adducts and flexes thigh

97
Q

Origin: Tibialis anterior

A

Lateral condyle of tibia

98
Q

Insertion: Tibialis anterior

A

Medial cuneiform & base of metatarsal I

99
Q

Innervation: Tibialis anterior

A

Deep fibular nerve (L4-S1)

100
Q

Action: Tibialis anterior

A

Dorsiflexion & inversion

101
Q

Origin: Extensor hallucis longus

A

Middle medial surface of fibula & interosseous membrane

102
Q

Insertion: Extensor hallucis longus

A

Base of distal phalanx of great toe

103
Q

Innervation: Extensor hallucis longus

A

Deep fibular nerve (L4-S1)

104
Q

Action: Extensor hallucis longus

A

Extension of great toe & dorsiflexion of foot

105
Q

Origin: Extensor digitorum longus

A

Medial surface of fibula & lateral tibial condyle

106
Q

Insertion: Extensor digitorum longus

A

Distal & middle phalanges of lateral four toes

107
Q

Innervation: Extensor digitorum longus

A

Deep fibular nerve (L4-S1)

108
Q

Action: Extensor digitorum longus

A

Extension of lateral four toes and dorsiflexion of foot

109
Q

Origin: Fibularis tertius

A

Distal part of the anterior surface of fibula

110
Q

Insertion: Fibularis tertius

A

Dorsomedial surface of base of metatarsal V

111
Q

Innervation: Fibularis tertius

A

Deep fibular nerve (L3-S1)

112
Q

Action: Fibularis tertius

A

Dorsiflexion & eversion of foot

113
Q

Origin: Fibularis longus

A

Upper lateral surface of fibula & head, and interosseous membrane

114
Q

Insertion: Fibularis longus

A

Base of metatarsal I & medial cuneiform

115
Q

Innervation: Fibularis longus

A

Superficial fibular nerve (L4-S1)

116
Q

Action: Fibularis longus

A

Eversion & plantar flexion of foot

117
Q

Origin: Fibularis brevis

A

Lateral distal surface of shaft of fibula

118
Q

Insertion: Fibularis brevis

A

Lateral tubercle of base of metatarsal V

119
Q

Innervation: Fibularis brevis

A

Superficial fibular nerve (L4-S1)

120
Q

Action: Fibularis brevis

A

Eversion & plantar flexion of foot

121
Q

Origin: Gastrocnemius

A

Upper posterior medial & lateral surfaces of femoral condyles

122
Q

Insertion: Gastrocnemius

A

Calcaneal tendon

123
Q

Innervation: Gastrocnemius

A

Tibial nerve (S1-S2)

124
Q

Action: Gastrocnemius

A

Plantar flexes foot & flexes knee

125
Q

Origin: Plantaris

A

Lateral supracondylar line of femur

126
Q

Insertion: Plantaris

A

Calcaneal tendon

127
Q

Innervation: Plantaris

A

Tibial nerve (S1-S2)

128
Q

Action: Plantaris

A

Plantar flexes foot & flexes knee

129
Q

Origin: Soleus

A

-Soleal line & medial border of tibia
-Posterior aspect of fibular head, neck, and proximal shaft

130
Q

Insertion: Soleus

A

Calcaneal tendon

131
Q

Innervation: Soleus

A

Tibial nerve (S1-S2)

132
Q

Action: Soleus

A

Plantar flexes the foot

133
Q

Origin: Popliteus

A

Lateral surface of femoral condyle

134
Q

Insertion: Popliteus

A

Posterior surface of proximal tibia

135
Q

Innervation: Popliteus

A

Tibial nerve (L4-S1)

136
Q

Action: Popliteus

A

-Closed chain: Laterally rotates femur (unlocks knee)
-Open chain: Medially rotates the tibia

137
Q

Origin: Flexor digitorum longus

A

Medial side of posterior surface of tibia

138
Q

Insertion: Flexor digitorum longus

A

Distal phalanges of the lateral 4 toes

139
Q

Innervation: Flexor digitorum longus

A

Tibial nerve (L4-S2)

140
Q

Action: Flexor digitorum longus

A

Flexes lateral 4 toes

141
Q

Origin: Flexor hallucis longus

A

Inferior 2/3 of posterior surface of fibula & interosseous membrane

142
Q

Insertion: Flexor hallucis longus

A

Plantar surface of distal phalanx of great toe

143
Q

Innervation: Flexor hallucis longus

A

Tibial nerve (L4-S2)

144
Q

Action: Flexor hallucis longus

A

-Flexes great toe
-Inversion & plantar flexion

145
Q

Origin: Tibialis posterior

A

Posterior surface of interosseous membrane & shafts of tibia & fibula

146
Q

Insertion: Tibialis posterior

A

Tuberosity of navicular and medial cuneiform

147
Q

Innervation: Tibialis posterior

A

Tibial nerve (L5-S1)

148
Q

Action: Tibialis posterior

A

Inversion & plantar flexion