tibialis anterior
O: Lateral condyle of tibia, upper ½ of lateral surface of tibia, interosseous membrane
I: medial and plantar surface of middle cuneiform, base of 1st metatarsal
A: dorsiflexion, inversion (supination) of the foot
N: deep peroneal
Extensor hallicus longus
O: middle half of anterior fibula, interosseous membrane
I: base of distal phalanx of great toe
A: extends & hyperextends great toe, dorsiflexion & inverts foot
N: deep peroneal
Extensor digitorum longus
O: upper 2/3 of anterior fibula, interosseous membrane, lateral condyle of fibula
I: dorsal surface of lateral 4 toes, base of middle and distal phalanges
A: extends toe, dorsiflexion and eversion of foot
N: deep peroneal
peroneus (fibularis) tertius
O: lower 2/3 of the fibula; interosseous membrane
I: dorsal surface of the base of 5th metatarsal
A: dorsiflexion and eversion of foot
N: deep peroneal
gastrocnemius
O: lateral head: lateral condyle and posterior surface of femur
medial head: popliteal surface of femur above medial condyle
I: posterior surface of calcaneus through achillies tendon
A: plantarflexion of foot, flexes leg at knee
N: tibial nerve
soleus
O: Posterior surface of the tibia, upper 1/3 of
posterior
surface of the fibula, fibrous
arch between tibia & fibula
I: posterior surface of calcaneus via the achillies tendon
A: plantarflexion of the foot
N: tibial nerve
plantaris
O: lateral supracondylar ridge of femur, oblique popliteal ligament
I: posterior surface of calcaneus
A: plantarflexion of foot, flexes leg at knee
N: tibial nerve
popliteus
O: lateral surface of the lateral condyle of the femur
I: upper part of the posterior surface of the tibia
A: medial rotation of the leg, flexion of the leg
N: tibial nerve
flexor hallucis longus
O: Lower 2/3 of posterior surface of the shaft of
the fibula,
posterior intermuscular septum,
interosseous membrane
I: base of distal phalanx of the great toe
A: flexion of great toe (distal phalanx), assist PF and inversion of the foot
N: tibial nerve
flexor digitorum longus
O: medial part of posterior surface of the tibia
I: base of 2-5 distal phalanges
A: flexion of 2-5 distal phalanges, assist PF and inversion of foot
N: tibial nerve
tibialis posterior
O: lateral part of the posterior surface of the tibia, proximal 1/2 of the posterior surface of the fibula
I: navicular tuberosity, cuboid, cuneiforms, 2-4 metatarsals, sustentaculum tali
A: flexion of 2-5 distal phalanges, assist PF and inversion of the foot
N: tibial nerve
peroneus (fibularis) longus
O: upper 2/3 of the lateral surface of the fibula
I: lateral surface of medial cuneiform, base of 1st metatarsal
A: plantarflexion & eversion of foot
N: superficial peroneal nerve
peroneus (fibularis) brevis
O: lower 2/3 surface of the fibula
I: lateral side of the base of 5th metatarsal
A: plantarflexion & eversion of foot
I: superficial peroneal nerve