Muscles of the Lower Limb

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Gluteus maximus

O: Iliac crest
I: Gluteal tuberosity of femur
A: Rotates thigh laterally @ hip

Gluteus medius

O: Lateral surface of ilium
I: Greater trochanter of femur
A: Abducts thigh @ hip

Gluteus minimus

O: Lateral surface of lower half of ilium
I: Greater trochanter of femur
A: Abducts thigh @ hip

Tensor fasciae latae

O: Anterior border of ilium/iliac crest
I: Iliotibial tract
A: Abducts thigh @ hip

Piriformis

O: Anterolateral surface of sacrum
I: Superior border of greater trochanter of femur
A: Hip rotate thigh laterally @ hip

Semimembranosus

O: Ischial tuberosity
I: Proximomedial surface of tibia
A: Flexes leg @ knee

Semtendinosus

O: Ischial tuberosity
I: Proximomedial surface of tibia
A: Flexes leg @ knee

Biceps femoris

O (long): ischial tuberosity
O (short): linea aspera
I: head of fibula
A: Flexes leg @ knee

Pectineus

O: Pectineal line of pubis
I: Distal to lesser trochanter of femur
A: Adducts thigh @ hip

Adductor brevis

O: Inferior ramus of pubis
I: Linea aspera of femur
A: Adducts thigh @ hip

Adductor longus

O: Pubis - below pubic crest
I: Linea aspera of femur
A: Adducts thigh @ hip

Adductor magnus

O: Inferior ramus of pubis
I: Linea aspera of femur
A: Adducts thigh @ hip

Gracilis

O: Inferior edge of symphysis pubis
I: Proximomedial surface of tibia
A: Adducts thigh @ hip

Iliopsoas

O: Iliac fossa
I: Lesser trochanter
A: Flexes hip

Sartorius

O: Anterior superior iliac spine
I: Medial surface of tibia
A: Flexes leg

Rectus femoris

O: Anterior infeiror iliac spine
I: Patella by common tendon
A: Extends leg @ knee

Vastus lateralis

O: Linea aspera of femur
I: Patella by common tendon
A: Extends leg @ knee

Vastus intermedius

O: Anterior surface of femur
I: Patella by common tendon
A: Extends leg @ knee

Vastus medialis

O: Linea aspera of femur
I: Patella by common tendon
A: Extends leg @ knee

Tibialis anterior

O: Lateral condyle of tibia
I: 1st metatarsal
A: Dorsiflexes ankle

Extensor digitorum longus

O: Lateral condyle of tibia
I: Extensor exponents of digits II-V
A: Extends digits II-V

Fibularis longus

O: Lateral condyle of tibia
I: Metatarsal I
A: Plantar flexes @ ankle

Fibularis brevis

O: Lower aspect of fibula
I: Metatarsal V
A: Plantar flexes @ ankle

Tibialis posterior

O: Tibia
I: Navicular
A: Plantar flexes @ ankle

Flexor digitorum longus

O: Posterior surface of tibia
I: Distal phalanges of digits II-V
A: Flexes digits II-V

Plantaris

O: Suprcondylar ridge of femur
I: Calcaneus
A: Plantar flexes @ ankle

Gastrocnemius

O: Lateral condyle of femur
I: Posterior surface of calcaneus
A: Plantar flexes @ ankle

Soleus

O: Posterior surface of fibula
I: Calcaneus
A: Plantar flexes @ ankle

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