Lower Limb Muscles

Front 1

Origin
Pectineus

Back 1

Superior ramus of pubis

Front 2

Insertion
Pectineus

Back 2

Pectineal line of femur, inferior to lesser trochanter

Front 3

Action
Pectineus

Back 3

Adducts and flexes thigh; assists w/ medial rotation of thigh

Front 4

Innervation
Pectineus

Back 4

Femoral Nerve, branches from obturator

Front 5

Origin
Iliopsoas

Back 5

Sides of T2-T5 vert. and discs b/w them; transverse processes of all lumbar vert.

Front 6

Insertion
Iliopsoas

Back 6

Lesser trochanter of the femur

Front 7

Action
Iliopsoas

Back 7

Acts in flexing thigh at hip joint and stabilizing this joint

Front 8

Innervation
Iliopsoas

Back 8

Anterior rami of lumbar nerves
(L1, L2, l3)

Front 9

Origin
Sartorius

Back 9

Anterior Superior Iliac Spine (ASIS) and superior part of notch inferior to it.

Front 10

Insertion
Sartorius

Back 10

Superior part of medial surface of the tibia

Front 11

Action
Sartorius

Back 11

Flexes, abducts and laterally rotates thigh at hip joint; flexes leg at knee joint

Front 12

Innervation
Sartorius

Back 12

Femoral Nerve (L2, L3)

Front 13

Origin
Rectus Femoris

Back 13

Anterior Inferior Iliac Spine (AIIS) and ilium superior to acetabulum

Front 14

Insertion
Rectus Femoris

Back 14

Base of patella; tibial tuberosity

Front 15

Action
Rectus Femoris

Back 15

Flexes thigh; extends leg

Front 16

Innervation
Rectus Femoris

Back 16

Femoral nerve (L2, L3, L4)

Front 17

Origin
Vastus Lateralis

Back 17

Greater Trochanter and lateral lip of linea aspera of femur

Front 18

Insertion
Vastus Lateralis

Back 18

Lateral side of patella; tibial tuberosity

Front 19

Action
Vastus Lateralis

Back 19

Extends leg

Front 20

Innervation
Vastus Lateralis

Back 20

Femoral Nerve

Front 21

Origin
Vastus medialis

Back 21

Intertrochanteric line and medial lip of linea aspera of femur

Front 22

Insertion
Vastus medialis

Back 22

Medial side of patella; tibial tuberosity

Front 23

Action
Vastus medialis

Back 23

Extends leg

Front 24

Innervation
Vastus medialis

Back 24

Femoral nerve (L2, L3, L4)

Front 25

Origin
Vastus intermedius

Back 25

Anterior and Lateral surfaces of shaft of femur

Front 26

Insertion
Vastus intermedius

Back 26

Upper border of patella; tibial tuberosity

Front 27

Action
Vastus intermedius

Back 27

Extend Leg

Front 28

Innervation
Vastus intermedius

Back 28

Femoral Nerve (L2, L3, L4)

Front 29

Origin
Adductor Longus

Back 29

Body of pubis inferior to pubic crest

Front 30

Insertion
Adductor Longus

Back 30

Middle third of linea aspera of femur

Front 31

Action
Adductor Longus

Back 31

Adducts thigh

Front 32

Innervation
Adductor Longus

Back 32

Obturator, branch of anterior division (L2, L3, L4)

Front 33

Origin
Adductor Brevis

Back 33

Body and inferior ramus of pubis

Front 34

Insertion
Adductor Brevis

Back 34

Pectineal line and proximal part of the linea aspera of femur

Front 35

Action
Adductor Brevis

Back 35

Adducts thigh; flexes thigh

Front 36

Innervation
Adductor Brevis

Back 36

Obturator Branch of anterior division

Front 37

Origin
Adductor Magnus

Back 37

Adductor part: inferior ramus of pubis, ramus of ischium

Hamstring part: ishial tuberosity

Front 38

Insertion
Adductor Magnus

Back 38

Adductor: gluteal tuberosity, linea aspera, medial supracondylar line

Hamstrings: adductor tubercle of femur

Front 39

Action
Adductor Magnus

Back 39

Adductor: Adducts thigh; flexes thigh

Hamstrings: extends thigh

Front 40

Innervation
Adductor Magnus

Back 40

Adductor: obturator nerve
branches of posterior postition

Hamstrings: tibial part of sciatic nerve

Front 41

Origin
Gracilis

Back 41

Body and inferior ramus of pubis

Front 42

Insertion
Gracilis

Back 42

Superior part of mediall surface of the tibia

Front 43

Action
Gracilis

Back 43

Adducts thigh, flexes leg; help rotate medially

Front 44

Innervation
Gracilis

Back 44

Obturator Nerve

Front 45

Origin
Obturator Externus

Back 45

Margins of obturator foramen and obturator membrane

Front 46

Insertion
Obturator Externus

Back 46

Trochanteric fossa of femur

Front 47

Action
Obturator Externus

Back 47

Laterally rotates thigh; steadies head of femur in acetabulum

Front 48

Innervation
Obturator Externus

Back 48

Obturator Nerve

Front 49

Origin
Tibialis Anterior

Back 49

Lateral condyle and superior half of lateral surface of tibia and interosseous membrane

Front 50

Insertion
Tibialis Anterior

Back 50

Medial and inferior surface of medial cuniform and base of 1st metatarsal

Front 51

Action
Tibialis Anterior

Back 51

Dorsiflexes ankle and inverts foot

Front 52

Origin
Extensor hallucis Longus

Back 52

Middle part of anterior surface of fibula and interosseous membrane

Front 53

Insertion
Extensor hallucis Longus

Back 53

Dorsal aspect of base of distal phalanx of great toe (hallux)

Front 54

Action
Extensor Hallucis Longus

Back 54

Extends great toe and dorsiflexes ankle

Front 55

Innervation
Extensor Hallucis Longus

Back 55

Deep fibular nerve

Front 56

Origin
Extensor digitorum longus

Back 56

Lateral condyle of tibia and superior three quarters of medial surface of fibula and interosseous membrane

Front 57

Insertion
Extensor digitorum longus

Back 57

Middle and distal phalanges of lateral 4 digits.

Front 58

Innervation
Tibialis Anterior

Back 58

Deep Fibular Nerve

Front 59

Action
Extensor Digitorum Longus

Back 59

Extends lateral 4 digits and dorsiflexes ankle

Front 60

Innervation
Extensor Digitorum Longus

Back 60

Deep fibular nerve

Front 61

Origin
Extensor Digitorum Brevis

Back 61

Calcaneus, interosseous talocalcaneal ligament; stem of inferior extensor retinaculum

Front 62

Insertion
Extensor Digitorum Brevis

Back 62

Long flexor tendons of 4 medial toes (digits 2-5)

Front 63

Action
Extensor Digitorum Brevis

Back 63

Aids in extensor digitorum longus in extending 4 medial toes at metatarsophalangeal and interphalangeal joints

Front 64

Innervation
Extensor Digitorum Brevis

Back 64

Deep fibular nerve

Front 65

Origin
Extensor hallucis brevis

Back 65

In common with extensor digitorum brevis

Front 66

Insertion
Extensor hallucis brevis

Back 66

Dorsal aspect of base of proximal phalanx of great toe

Front 67

Action
Extensor hallucis brevis

Back 67

Aids in extensor hallucis longus in extending great toe at metatarsophalangeal joint

Front 68

Innervation
Extensor hallucis brevis

Back 68

Deep fibular nerve

Front 69

Origin
Fibularis longus

Back 69

Head and superior 2/3 of lateral surface of fibula

Front 70

Insertion
Fibularis longus

Back 70

Base of 1st metatarsal and medial cuneiform

Front 71

Action
Fibularis longus

Back 71

Everts foot and weakly plantarflexes ankle

Front 72

Innervation
Fibularis longus

Back 72

Superficial fibular nerve

Front 73

Origin
Fibularis brevis

Back 73

Inferior 2/3 of lateral surface of fibula

Front 74

Insertion
Fibularis Brevis

Back 74

Dorsal surface of turberosity on lateral side of base of 5th metatarsal

Front 75

Action
Fibularis Brevis

Back 75

Everts foot and weakly plantarflexes ankle

Front 76

Innervation
Fibularis Brevis

Back 76

Superficial fibular nerve

Front 77

Origin
Tensor Fascia Lata

Back 77

ASIS; anterior aspect of iliac crest

Front 78

Insertion
Tensor Fascia Lata

Back 78

Iliotibial tract (IT), wich attached to lateral condyle of tibia

Front 79

Action
Tensor Fascia Lata

Back 79

Adduct and Medially rotate thigh; keeps pelvis level when ipsalateral limb is weight bearing

Front 80

Innervation
Tensor Fascia Lata

Back 80

Superior Gluteal Nerve