muscles of lower limb
TRANSCRIPT
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MUSCLES OF ANTERIOR COMPARTMENT OF LEG
PRESENTED BY SAHANA
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TIBALIS ANTERIOR MUSCLE
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TIBALIS ANTERIOR-ORIGIN Lateral epicondyl of
tibiaUpper two-third of
lateral surface of shaft of tibia
Adjoinig interosseus membrane
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TIBALIS ANTERIOR -INSERTIONMedial cuneiformBase of the first
metatarsal bone
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TIBALIS ANTERIOR MUSCLE POSTION
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TIBALIS ANTERIOR- ACTIONDorsiflexor of the
footInvertor of the foot
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EXTENSOR HALLICUS LONGUS MUSCLE
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EXTENSOR HALLUCIS LONGUS-ORIGINPosterior half of the
middle two-fourth of the medial surface of the shaft of fibula
Adjoinig part of interosseus membrane
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EXTENSOR HALLUCIS LONGUS-INSERTIONDorsal surface of
base of the distal phalanx of the big toe
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EXTENSOR HALLICUS LONGUS MUSCLE POSITION
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EXTENSOR HALLICUS LONGUS -ACTIONDorsiflexor of the
footExtends
metatarsophalangeal and interphalangeal joints of the big toe
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EXTENSOR DIGITORUM LONGUS MUSLE
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EXTENSOR DIGITORUM LONGUS-ORIGINLateral condyle of
tibiaWhole of uper one-
fourth and anterior half of middle two –fourth of the medial surface of the shaft of the fibula
Uper part of interosseous membrane
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EXTENSOR DIGITORUM LONGUS-INSERTIONIt divides into four
tendons for the lateral four toes.each tendon is joined on the lateral side by a tendon of the extensor edigitorum brevis ,
It is inserted on the bases of the middle and distal phalanges
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EXTENSOR DIGITORUM LONGUS MUSCLE POSITION
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EXTENSOR DIGITORUM LONGUS-ACTIONDorsiflexor of the
footExtends metatarso
phalangeal ,proximal,distal interphalangeal joints of second-fifth toes
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PERONEUS TERTIUS MUSCLE
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PERONEUS TERTIUS-ORIGINSeprated part of the
extensor digitorum longus
Lower one-fourth of the medial surface of the shaft of the fibula
Adjoining part of the introsseous membrane
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PEROEUS TERTIUS-INSERTIONMedial part of the
dorsal surface of the base of the fifth metatarsal bone
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PERONEUS TERTIUS MUSCLE POSITION
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PERNEUS TERTIUS-ACTIONDorsiflexor of the
foot Evertor of the foot
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EXTENSOR DIGITORUM BREVIS MUSCLE
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EXTENSOR DIGITORUM BREVIS-ORIGINSmall muscle
situated on the lateral part of the dorsum of the foot
The muscle arises from anterior part of the superior surface of the calcaneum
The medial tendon is known as extensor hallucis brevis
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EXTENSOR DIGITORUM BREVIS-INSERTION The muscle divides
into medial four tendons
the medial tendon is inserted into base of proximal phalanx of the big toe
the other tendon is inserted into 2nd,3rd,4th toes
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EXTENSOR DIGITORUM BREVIS MUSCLE POSITION
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EXTENSOR DIGITORUM BREVIS- ACTIONMedial tendons
extends metatarsophalangeal joint
Other extends metatarsophalangeal joint and interphalangeal joint of the 2nd,3rd,4th of the dorsiflexed foot
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