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Cruris Muscles (O,I,N,F) Anterior and Lateral groups

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yaboiemil's version from 2016-05-18 07:10

Origin

Question Answer
Tibialis Anterior (O)Lateral Epicondyle of Tibia, Proximal 2/3 of body of Tibia, Interosseous Mem.
Extensor Digitorum Longus (O)Lateral Epicondyle of Tibia, Proximal 3/4 of body of Fibula, Interosseous Mem.
Extensor Hallucis Longus (O)Fibular Medial Surface (middle 2/4), Interosseous Membrane
Fibularis Longus (O)Head of Fibula, Body of fibula (lateral surface - proximal 1/2)
Fibularis Brevis (O)Body of Fibula - Lateral Surface, distal 1/2
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Insertion

Question Answer
Tibialis Anterior (I)Base of 1st Metatarsal, Medial Cuneiform
Extensor Digitorum Longus (I)Four Tendons to toes 2-5 (into dorsal Aponeurosis), Distal Phalanges of Toes
Extensor Hallucis Longus (I)Dorsal Apon. of big toe, Distal Phalanx of Big Toe
Fibularis Longus (I)Base of 1st Metatarsal, Medial Cuneiform
Fibularis Brevis (I)Base of 5th metatarsal, Tuberosity of 5th Metatarsal
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Innervation

Question Answer
Tibialis Anterior (N)Deep Fibular Nerve
Extensor Digitorum Longus (N)Deep Fibular Nerve
Extensor Hallucis Longus (N)Deep Fibular Nerve
Fibularis Longus (N)Superficial Fibular Nerve
Fibularis Brevis (N)Superficial Fibular Nerve
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Function

Question Answer
Tibialis Anterior (F)Dorsal Flexion, Supination of Foot, Maintains longitudinal and transverse arches of foot
Extensor Digitorum Longus (F)Extension of 2nd to 5th toe, Dorsal flexion and accessory pronation of foot
Extensor Hallucis Longus (F)Extension of big toe, accessory dorsiflexion of foot
Fibularis Longus (F)Plantar flexion, pronation and abduction of the foot, maintains longitudinal and transverse arch of the foot
Fibularis Brevis (F)Plantar Flexion, pronation and abduction of the foot
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