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Lower leg

MuscleOriginInsertionAction
Tibialis Anterior Ant. proximal tibia (lat. tibial condyle, prox. 2/3 of anterolateral surface of tibia & interosseous membrane) Medial cuneiform & base of 1st metatarsal (med. planar surfaces) Dorsiflexion & inversion of ankle
Extensor Digitorum Longus Prox. 2/3 of fibula, interossesous membrane, lat. condyle of tibia (ant. surfaces) Dorsal surface of digits 2-5 Extension of digits 2-5, dorsiflexion & eversion of foot
Extensor Hallucis Longus Ant. middle 1/3 of fibula & interosseous membrane Base of distal phalanx of big toe (dorsal surface) Extension of big toe, dorsiflexion & inversion of foot
Peroneus Longus Head & proximal lat. shaft of fibula Medial cuneiform & base of 1st metatarsal Eversion & plantar flexion of foot
Peroneus Brevis Distal lat. 1/2 of fibula Base of 5th metatarsal (lateral aspect) Eversion & plantar flexion of foot
Peroneus Tertius Distal 1/3 of ant. fibula Base of 5th metatarsal (dorsal surface) Dorsiflexion & eversion of foot
Gastrocnemius Above medial and lateral condyle of femur (post. surface) Calcaneus (via calcaneal tendon) Plantar flexion, knee flexion & inversion of foot
Soleus Soleal line of tibia & upper fibula Calcaneus (via calcaneal tendon) Plantar flexion & inversion of foot
Plantaris Distal posterolateral femur (above lat. head of gastroc.) Calcaneus (via calcaneal tendon) Plantar flexion & knee flexion
Popliteus Lat. femoral condyle Proximal post. tibia (med. side above soleal line) Unlocks knee from wxtended position, knee flexion
Tibialis Posterior Post. proximal 2/3 of tibia,fibula & interosseous membrane Navicular, all 3 cuneiforms, 2nd-4th metatarsals, cuboid & calcaneus (Fans out of plantar surface of foot) Plantar flexion & inversion of foot
Flexor Digitorum Longus Post. middle 1/3 of tibia Base of distal phalanges 2-5 (plantar surface) Flexion of digits 2-5, plantar flexion & inversion of foot
Flexor Hallucis Longus Post. inf. 2/3 of fibula & interosseous membrane Distal phalanx of big toe (plantar surface) Flexion of big toe, plantar flexion & inversion of foot
Created by: tleaf