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Leg, Foot

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Question
Answer
Tibialis Anterior Proximal Attachment   Lateral condyle of tibia, superior 2/3 of lateral surface of tibia, fascia, interosseus membrane, intermuscular septum  
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Nerve that innervates Tibialis Anterioer   Deep Fibular Nerve (L4,5,S1)  
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Actions of the Tibialis Anterior   Dorsiflexes and Inverts at ankle; Decelerates foot in gait between heel strike and flat foot  
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Extensor Digitorum Longus: Proximal Attachment   Lateral condyle of tibia, superior 3/4 of anterior surface of fibula, fascia, interosseus membrane, and intermuscular septum  
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Nerve that innervates Extensor Digitorum Longus   Deep Fibular Nerve (L4,5,S1)  
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Actions of Extensor Digitorum Longus   Extends lateral 4 digits and dorsiflexes foot  
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Extensor Hallucis Longus: Proximal Attachment   Middle part of anterior surface of fibula, fascia, interosseus membrane, intermuscular septum  
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Nerve that innervates the Extensor Hallucis Longus   Deep Fibular Nerve (L4,5,S1)  
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Actions of the Extensor Hallucis Longus   Extends the great toe and dorsiflexes foot  
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Fibularis Tertius: Proximal Attachment   Inferior 1/3 of anterior surface of fibula, fascia, and interoseus membrane  
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Nerve that innervates Fibularis Tertius   Deep Fibular Nerve: (L4,5,S1)  
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Actions of the Fibularis Tertius   Dorsiflexes foot and aids in eversion of foot  
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Fibularis Longus: Proximal Attachment   Head and superior 2/3 of lateral surface of fibula, fascia, intermuscular septum, few fibers from laterl condyle  
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Nerve that innercates the Fibularis Longus   Superficial fibular nerve (L5,S1,2)  
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Actions of the Fibularis Longus   NWB: everts foot and weakly plantarflexes; depresses 1st metatarsal WB: plantar flexes foot and supports arches; limits inversion  
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Fibularis Brevis: Proximal Attachment   Inferior 2/3 of lateral surface of fibula, fascia, intermuscular septum  
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Nerve that innervates Fibularis Brevis   Superficial fibular nerve (L5,S1,2)  
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Actions of the fibularis brevis   aids eversion, limits inversion, weakly plantarflexes foot  
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Gastrocnemius: proximal attachment   Lateral head: lateral aspect of lateral femoral condyle (superior to LCL att, lateral supracondylar line, and knee joint capsule) Medial head: popliteal of femur (superior to medial condyle and knee joint capsule)  
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Gastrocnemius: distal attachment   Posterior surface of calcaneous with calcaneal tendon  
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Nerve that innervates gastrocnemius   Tibial nerve (L4-S3)  
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Action of gastrocnemius   Plantarflexes foot; flexes knee joint (gastrocnemius has faster contraction than soleus so important in running/leaping)  
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Soleus: proximal attachment   Posterior aspect of head of fibula; superior 1/4 of fibula; soleal line and medial border of tibia; fascia; fibrous arch btw tibia and fibula  
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Soleus: distal attachment   Posterior surface of calcaneous with calcaneal tendon  
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Nerve that innervates the soleus   Tibial nerve (L4-S3)  
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Action of the soleus   Plantarflexes foot and steadies leg on foot  
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Plantaris: proximal attachment   PA: Inferior end of lateral supracondylar line of femur and fascia; oblique popliteal ligament  
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Plantaris: distal attachment   posterior surface of calceneus with calcaneal tendon  
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Nerve that innervates the plantaris   Tibial nerve (L4-S3)  
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Actions of the plantaris   Weakly assist in plantarflexion of foot; flexes knee joint  
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Popliteus: proximal attachment   lateral surface of lateral condyle of femur and lateral meniscus; knee joint capsule  
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Popliteus: distal attachment   posterior surface of tibia, superior to soleal line  
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nerve that innervates the popliteus   tibial nerve (L4-S3)  
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Actions of the Popliteus   weakly flexes knee with distal end fixed; unlocks knee by medial rotation when distal end free; retracts lateral meniscus during knee flexion; aids posterior stability of knee  
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Flexor Hallucis Longus: proximal attachment   Inferior 2/3 of posterior surface of fibula and inferior part of interosseus membrane; fascia, intermuscular septum, and fascia of tibilais posterior  
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Flexor hallucis longus: distal attachment   plantar surface of base of distal phalanx of great toe  
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nerve that innervates flexor hallucis longus   tibial nerve (L4-S3)  
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Actions of flexor hallucis longus   flexes great toe at all joints and plantarflexes foot; supports longitudinal arch of foot and maintains pads of toe on ground  
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Flexor digitorum longus: proximal attachment   medial part of posterior surface of tibia, inferior to soleal line  
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Flexor digitorum longus: distal attachment   bases of distal phalanges of lateral 4 digits  
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Nerve that innervates flexor digitorum longus   tibial nerve (L4-S3)  
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Actions of flexor digitorum longus   flexes lateral 4 digits and plantarflexes foot; supports longitudinal arch  
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Tibialis Posterior: proximal attachment   Interosseus membrane, posterior surface of tibia inferior to soleal line, and posterior surface of fibula (also fascia and intermuscular septum)  
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Tibialis Posterior: distal attachment   tuberosity of navicular, medial and intermediate cuneiforms, cuboid and bases of 2nd, 3rd, and 4th metatarsal bones; tendon of FHB  
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Nereve that innervates tibialis posterior   tibial nerve (L4-S3)  
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Actions of tibialis posterior   plantarflexes and INVERTS foot; controlls pronation  
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Tibialis Anterior Distal Attachment   Medial and plantar surfaces of medial cuneiform and base of 1st metatarsal  
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Extensor Digitorum Longus Distal Attachment   Middle and distal phalanges of lateral 4 digits  
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Extensor Hallucis Longus Distal Attachment   Dorsal aspect of base of distal phlanx of great toes  
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Fibularis Tertius Distal Attachment   Dorsum of base of 5th metatarsal  
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Fibularis Longus Distal Attachment   Plantar surface of base of 1st metatarsal bone and medial cuneiform bone (Posterior to lateral malleolus crosses obliquely)  
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Fibularis Brevis Distal Attachment   Dorsal surface of tuberosity on lateral side of base of 5th metatarsal. (posterior to fibularis tertius)  
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