superficial and deep leg and foot muscles O/I/A
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| Insertion of Tibialis Anterior | Medial side of inferior surface of medial cuneiform & base of 1st metatarsal.
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| Origin of Tibialis Anterior | lateral condyle of tibia, superior 1/2 of lateral surface of tibia
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| Action of Tibialis Anterior | Dorsiflex and inversion, helps to support the medial arch
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| Extensor Digitorum Longus - Origin | lateral condyle of tibia, upper 3/4 of anterior surface of fibula, interosseous membrane where the tendon divides into 4
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| Extensor Digitorum Longus - Insertion | distal and middle phalanges of toes #2-5
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| Extensor Digitorum Longus - Action | dorsiflex, extends toes, everts
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| Extensor Hallucis Longus - Origin | middle 1/2 anterior fibula, interosseus membrane
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| Extensor Hallucis Longus - Insertion | distal phalanx of big toe
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| Extensor Hallucis Longus - Action | dorsiflax, extends big toe, inverts foot
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| Peroneus Tertius - Origin | distal 1/3 of anterior surface of fibula, interosseus membrane
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| Peroneus Tertius - Insertion | dorsal surface of bone & proximal shaft of 5th metatarsal in front of malleolus
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| Peroneus Tertius - Action | dorsiflex, eversion, opposes tibialis anterior
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| Peroneus Longus - Origin | head of fibula, , upper 2/3 of lateral surface of fibula
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| Peroneus Longus - Insertion | lateral side of inferior surface of medial cuneiform & base of 1st metatarsal
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| Peroneus Longus - Action | plantar flexion and eversion of the foot
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| Peroneus Brevis - Origin | inferior 2/3 of lateral fibula passes behind lateral malleolus & passes superior to the peroneal tubercle
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| Peroneus Brevis - Insertion | tuberosity of the base of 5th metatarsal
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| Peroneus Brevis - Action | Eversion of the foot, plantarflex
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| Gastrocnemius - Origin | Lateral Head - Lateral epicoondyle of femur
Medial Head - posterior femur proximal to medial epicondyle(back and above)
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| Gastrocnemius - Insertion | Calcaneus via achilles/calcaneal tendon
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| Gastrocnemius - Action | Flexes knee & plantarflexes ankle
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| Soleus - Origin | posterior fibula - head and upper 1/4 tibia - soleal line & medial border
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| Soleus - Insertion | Calcaneus via achilles/calcaneal tendon
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| Soleus - Action | plantarflexes ankle, postural muscle
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| Plantaris - Origin | Lateral side, inferior end of supracondylar line, oblique popliteal ligament
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| Plantaris - Insertion | calcaneus
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| Plantaris - Action | Flexes Knee, plantarflexes ankle
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| Popliteus - Origin | Lateral epicondyle of femur
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| Popliteus - Insertion | Posterior Tibia - superior to soleal line
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| Popliteus - Action | flexes knee, unlocks hperextented knee by medially rotating tibia relative to femur
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| Flexor Hallucis Longus - Origin | posterior surface of fibula inferior 2/3, & interosseus membrane
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| Flexor Hallucis Longus - Insertion | Base of distal phalanx - big toe
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| Flexor Hallucis Longus - Action | flexes big toe, plantar flexion, supports medial arch of foot
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| Flexor Digitorum Longus - Origin | Posterior surface of tibia
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| Flexor Digitorum Longus - Insertion | base of distal phalanx of toes #2-5
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| Flexor Digitorum Longus - Action | flex toes #2-5 plantar flexion, supports longitudinal arch
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| Tibialis Posterior - Origin | interosseous membrane & adjacent tibia/fibula
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| Tibialis Posterior - Insertion | plantar surface of the tuberosity of the navicular, cuboid, cuneiform & bases of metatarsals #2-4, covers entire base of foot
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| Tibialis Posterior - Action | inversion, plantar flexion, maintains arches
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| Extensor Digitorum Brevis - Origin | anterior dorsal surface of calcaneus & inferior extensor retinaculum
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| Extensor Digitorum Brevis - Insertion | proximal phalanx of big toe, blends w tendons of Extensor Digitorum Longus to toes #2-4
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| Extensor Digitorum Brevis - Action | extends toes #1-4, big toe part can be called extensor hallucis brevis
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| Abductor Hallucis - Origin | medial part of calcaneus, plantar aponeurosis, flexor retinaculum
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| Abductor Hallucis - Insertion | medial side of base of proximal phalanx of big toe
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| Abductor Hallucis - Action | abducts and flexes big toe, supports medial longitudinal arch of the foot
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| Flexor Digitorum Brevis - Origin | inferior surface of tubercalcanei, plantar aponeurosis, divides into 4 tendons
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| Flexor Digitorum Brevis - Insertion | middle phalanges of toes 2-5 both medial and lateral sides (superficial to tendon of flexor digitorum longus)
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| Flexor Digitorum Brevis - Action | flexes toes supports medial and lateral arches
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| Abductor Digiti Minimi - Origin | lateral side of plantar surface of calcaneus and aponeurosis
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| Abductor Digiti Minimi - Insertion | lateral side of base of proximal phalanx of little toe
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| Abductor Digiti Minimi - Action | abducts and flexes little toe, supports lateral longitudinal arch
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Created by:
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