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Tibialis Anterior [ANT]
Extensor Hallucis Longus [ANT]
S: fusiform
R: immediately deep to Tibialis Anterior and EDL, partly between them
O: mid 1/3 med Fibula shaft & ant surface of intmembrane, passes ↓ where tendon comes to surface, deep to retinacula to medial side of dorsum
I: base of distal phalanx of great toe
N: Deep Poroneal nerve (L4, 5)
A: dorsiflexion (extension) of great toe, cont'd = dorsiflex foot
Extensor Digitorum Longus [ANT]
S: pennate, splits into several tendons
R: deep to Tibialis Anterior, slightly superficial to
O: upper 3/4 of med Fibula shaft & ant surface of intmembrane, fibres pass ↓ and splits into 4 tendons - med 3 receive insertion of EDB
I: forms dorsal digital expansion into which corresponding Interossei and Lumbricals are inserted - divided into 3: central attaches to base of mid phalanx, other 2 joing together to insert into base of distal phalanx
N: Deep Peroneal nerve (L4, 5)
A: dorsiflexion (extension) of toes, cont'd dorsiflexes foot
Peroneus Tertius [ANT]
S: pennate, considered 5th tendon with EDL
R: often missing, deep to EDL
O: lower 1/3 med Fibula shaft & ant surface of intmembrane, passes ↓ where tendon comes to surface, deep to both retinacula
I: base of 5th metatarsal on dorsal surface
A: weak dorsiflexor of foot, assists eversion
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