Lower Extremity Anatomy & Muscle Functions

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Foundational Knowledge Review Materials

Last updated 3:01 AM on 8/30/26
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23 Terms

1
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Ankle Muscle - Dorsiflexion

  • Tibialis Anterior

    • Origin: Tibia

    • Insertion: Tarsals

  • Extensor Digitorum Longus

    • Origin: Tibia and Fibula

    • Insertion: Phalanges

  • Peroneus Tertius

    • Origin: Fibula

    • Insertion: Metatarsal

  • Extensor Hallucis Longus

    • Origin: Fibula

    • Insertion: Phalanges


2
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Ankle Muscle - Plantar-flexion

  • Soleus

    • Origin: Tibia and Fibula

    • Insertion: Calcaneus

  • Gastrocnemius

    • Origin: Femur

    • Insertion: Calcaneus

  • Tibialis posterior

    • Origin: Tibia and Fibula

    • Insertion: Tarsals and Metatarsals

  • Peroneus Longus

    • Origin: Tibia and Fibula

    • Insertion: Tarsals and Metatarsals

  • Peroneus Brevis

    • Origin: Fibula

    • Insertion: Metatarsal

  • Flexor Digitorum Longus

    • Origin: Tibia

    • Insertion: Phalanges

  • Flexor Hallucis Longus

    • Origin: Fibula

    • Insertion: Phalanges


3
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Ankle Muscle - Inversion

  • Tibialis Posterior

    • Origin: Tibia and Fibula

    • Insertion: Tarsals and Metatarsals

  • Tibialis Anterior

    • Origin: Tibia

    • Insertion: Tarsals

  • Gastrocnemius

    • Origin: Femur

    • Insertion: Calcaneus

  • Soleus

    • Origin: Femur

    • Insertion: Calcaneus


4
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Ankle Muscles - Eversion

  • Peroneus Longus

    • Origin: Tibia and Fibula

    • Insertion: Tarsals and Metatarsals

  • Peroneus Brevis

    • Origin: Fibula

    • Insertion: Metatarsal

  • Peroneus Tertius

    • Origin: Fibula

    • Insertion: Metatarsal


5
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Knee Muscles - Flexion

  • Biceps Femoris

    • Origin: Pelvis and Femur

    • Insertion: Tibia and Fibula

  • Semimembranosus

    • Origin: Pelvis

    • Insertion: Tibia

  • Semitendinosus

    • Origin: Pelvis

    • Insertion: Tibia

  • Gastrocnemius

    • Origin: Femur

    • Insertion: Calcaneus

  • Plantaris

    • Origin: Femur

    • Insertion: Calcaneus

  • Popliteus

    • Origin: Femur

    • Insertion: Tibia

  • Sartorius

    • Origin: Pelvis

    • Insertion: Tibia


6
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Knee Muscles - Extension

  • Rectus Femoris

    • Origin: Pelvis

    • Insertion: Patella

  • Vastus Lateralis

    • Origin: Femur

    • Insertion: Patella

  • Vastus Intermedius

    • Origin: Femur

    • Insertion: Patella

  • Vastus Medialis

    • Origin: Femur

    • Insertion: Patella

  • Tensor Fasciae Latae

    • Origin: Pelvis

    • Insertion: Femur


7
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Knee Muscles - Medial Rotation

  • Popliteus

    • Origin: Femur

    • Insertion: Tibia

  • Sartorius

    • Origin: Pelvis

    • Insertion: Tibia

  • Semimembranosus

    • Origin: Pelvis

    • Insertion: Tibia

  • Semitendinosus

    • Origin: Pelvis

    • Insertion: Tibia

  • Gracilis

    • Origin: Pelvis

    • Insertion: Tibia


8
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Knee Muscles - Lateral Rotation

  • Biceps Femoris

    • Origin: Pelvis and Femur

    • Insertion: Tibia and Fibula


9
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Hip Muscles - Flexion

  • Iliopsoas

    • Origin: Pelvis and Lumbar Vertebrae

    • Insertion: Femur

  • Rectus Femoris

    • Origin: Pelvis and Femur

    • Insertion: Tibia

  • Sartorius

    • Origin: Pelvis

    • Insertion: Tibia

  • Tensor Fasciae Latae

    • Origin: Pelvis

    • Insertion: Femur

  • Pectineus

    • Origin: Pelvis

    • Insertion: Femur


10
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Hip Muscles - Extension

  • Gluteus Maximus

    • Origin: Pelvis and Sacrum

    • Insertion: Femur

  • Biceps Femoris

    • Origin: Pelvis and Femur

    • Insertion: Tibia and Fibula

  • Semimembranosus

    • Origin: Pelvis and Femur

    • Insertion: Tibia and Fibula

  • Semitendinosus

    • Origin: Pelvis and Femur

    • Insertion: Tibia and Fibula

  • Gluteus Medius (posterior)

    • Origin: Pelvis

    • Insertion: Femur


11
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Hip Muscles - Abduction

  • Gluteus Medius

    • Origin: Pelvis

    • Insertion: Femur

  • Gluteus Minimus

    • Origin: Pelvis

    • Insertion: Femur

  • Gluteus Maximus

    • Origin: Pelvis and Sacrum

    • Insertion: Femur

  • Tensor Fasciae Latae

    • Origin: Pelvis

    • Insertion: Femur

  • Piriformis

    • Origin: Pelvis

    • Insertion: Femur

  • Obturator Internus

    • Origin: Pelvis

    • Insertion: Femur


12
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Hip Muscles - Adduction

  • Adductor Magnus

    • Origin: Pelvis

    • Insertion: Femur

  • Adductor Longus

    • Origin: Pelvis

    • Insertion: Femur

  • Adductor Brevis

    • Origin: Pelvis

    • Insertion: Femur

  • Pectineus

    • Origin: Pelvis

    • Insertion: Femur

  • Gracilis

    • Origin: Pelvis

    • Insertion: Tibia


13
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Hip Muscles - Medial Rotation

  • Gluteus Medius

    • Origin: Pelvis

    • Insertion: Femur

  • Gluteus Minimus

    • Origin: Pelvis

    • Insertion: Femur

  • Tensor Fasciae Latae

    • Origin: Pelvis

    • Insertion: Femur

  • Pectineus

    • Origin: Pelvis

    • Insertion: Femur


14
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Hip Muscles - Lateral Rotation

  • Pectineus

    • Origin: Pelvis

    • Insertion: Femur

  • Piriformis

    • Origin: Pelvis

    • Insertion: Femur

  • Obturator Internus

    • Origin: Pelvis

    • Insertion: Femur

  • Obturator Externus

    • Origin: Pelvis

    • Insertion: Femur

  • Gemellus

    • Origin: Pelvis

    • Insertion: Femur

  • Quadratus Femoris

    • Origin: Pelvis

    • Insertion: Femur

  • Gluteus Maximus

    • Origin: Pelvis and Sacrum

    • Insertion: Femur

  • Gluteus Medius

    • Origin: Pelvis

    • Insertion: Femur

  • Gluteus Minimus

    • Origin: Pelvis

    • Insertion: Femur

  • Sartorius

    • Origin: Pelvis

    • Insertion: Tibia


15
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Peripheral Nerve - Superior Gluteal

  • Key Muscles/Group

    • Gluteus medius/minimus, TFL

  • Major Action(s) to associate

    • Hip Abduction; pelvic stabilization


16
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Peripheral Nerve - Inferior Gluteal

  • Key Muscles/Group

    • Gluteus Maximus

  • Major Action(s) to associate

    • Hip Extension


17
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Peripheral Nerve - Femoral

  • Key Muscles/Group

    • Quadriceps

  • Major Action(s) to associate

    • Knee Extension


18
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Peripheral Nerve - Obturator

  • Key Muscles/Group

    • Hip Adductors

  • Major Action(s) to associate

    • Hip Adduction


19
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Peripheral Nerve - Sciatic

  • Key Muscles/Group

    • Hamstrings; parent nerve to tibial/common fibular nerve

  • Major Action(s) to associate

    • Knee flexion; Hip extension


20
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Peripheral Nerve - Tibial

  • Key Muscles/Group

    • Posterior compartment of leg

  • Major Action(s) to associate

    • Plantarflexion, inversion, toe flexion


21
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Peripheral Nerve - Common Fibular (peroneal)

  • Key Muscles/Group

    • Divides into superficial and deep fibular nerve

  • Major Action(s) to associate

    • -


22
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Peripheral Nerve - Deep Fibular (peroneal)

  • Key Muscles/Group

    • Anterior Compartment

  • Major Action(s) to associate

    • Dorsiflexion, toe extension


23
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Peripheral Nerve - Superficial Fibular (peroneal)

  • Key Muscles/Group

    • Lateral Compartment

  • Major Action(s) to associate

    • Eversion