MUSCLES OF ANTERIOR COMPARTMENT OF LEG
PRESENTED BY SAHANA
TIBALIS ANTERIOR MUSCLE
TIBALIS ANTERIOR-ORIGIN Lateral epicondyl of
tibiaUpper two-third of
lateral surface of shaft of tibia
Adjoinig interosseus membrane
TIBALIS ANTERIOR -INSERTIONMedial cuneiformBase of the first
metatarsal bone
TIBALIS ANTERIOR MUSCLE POSTION
TIBALIS ANTERIOR- ACTIONDorsiflexor of the
footInvertor of the foot
EXTENSOR HALLICUS LONGUS MUSCLE
EXTENSOR HALLUCIS LONGUS-ORIGINPosterior half of the
middle two-fourth of the medial surface of the shaft of fibula
Adjoinig part of interosseus membrane
EXTENSOR HALLUCIS LONGUS-INSERTIONDorsal surface of
base of the distal phalanx of the big toe
EXTENSOR HALLICUS LONGUS MUSCLE POSITION
EXTENSOR HALLICUS LONGUS -ACTIONDorsiflexor of the
footExtends
metatarsophalangeal and interphalangeal joints of the big toe
EXTENSOR DIGITORUM LONGUS MUSLE
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
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
EXTENSOR DIGITORUM LONGUS MUSCLE POSITION
EXTENSOR DIGITORUM LONGUS-ACTIONDorsiflexor of the
footExtends metatarso
phalangeal ,proximal,distal interphalangeal joints of second-fifth toes
PERONEUS TERTIUS MUSCLE
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
PEROEUS TERTIUS-INSERTIONMedial part of the
dorsal surface of the base of the fifth metatarsal bone
PERONEUS TERTIUS MUSCLE POSITION
PERNEUS TERTIUS-ACTIONDorsiflexor of the
foot Evertor of the foot
EXTENSOR DIGITORUM BREVIS MUSCLE
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
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
EXTENSOR DIGITORUM BREVIS MUSCLE POSITION
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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