Leg, Ankle, and Foot Flashcards
Abductor Hallucis
Origin: medial process of calcaneal tuberosity
Insertion: medial side of phalanx of great toe
Innervation: medial plantar nerve
Action: abduct and flex great toe
Abductor Digiti Minimi
Origin: lateral calcaneal tuberosity
Insertion: proximal phalanx of little toe
Innervation: lateral plantar nerve
Action: abducts little toe
Tibialis Anterior
Origin: lateral condyle of tibia
Insertion: medial cuneiform & base of metatarsal 1
Innervation: deep fibular (L4,S1)
Action: dorsiflexion and inversion of the foot
Extensor Digitorum Longus
Origin: medial surface of fibula and lateral tibial condyle
Insertion: distal and middle phalanx of lateral four toes
Innervation: deep fibular nerve
Action: extension of lateral 4 toes and dorsiflexion
Extensor Hallucis Longus
Origin: middle medial surface of fibula and interosseous membrane
Insertion: base of distal phalanx of great toe
Innervation: deep fibular nerve
Action: extension of great toe and dorsiflexion of foot
Fibularis Tertius
Origin: distal part of the anterior surface of fibula
Insertion: dorsomedial surface of base of 5th metatarsal
Innervation: deep fibular nerve
Action: dorsiflexion and eversion of foot
Fibularis Longus
Origin: upper lateral surface of fibula and head, and interosseous membrane
Insertion: base of metatarsal 1 and m. cuneiform
Innervation: superficial fibular nerve
Action: eversion and plantar flexion of foot
Fibularis Brevis
Origin: lateral distal surface of shaft of fibula
Insertion: lateral tubercle at base of metatarsal 5
Innervation: superficial fibular nerve
Action: eversion of foot and plantarflexion
Gastrocnemius
Origin: upper posterior medial and lateral surfaces of femoral condyles
Insertion: calcaneal tendon- calcaneus
Innervation: tibial nerve (S1-S2)
Action: plantarflexes foot and flexes knee
Plantaris
Origin: lateral supracondylar line of femur
Insertion: calcaneal tendon-calcaneus
Innervation: tibial nerve (S1-S2)
Action: plantarflexes foot and flexes knee
Soleus
Origin: soleal line and medial border of tibia; posterior aspect of fibular head, neck and proximal shaft
Insertion: calcaneal tendon-calcaneus
Innervation: tibial nerve (S1-S2)
Action: plantarflexes the foot
Popliteus
Origin: lateral surface of femoral condyle
Insertion: posterior surface of proximal tibia
Innervation: tibial nerve
Action: Close chain- lateral rotation of femur (unlocks knee), Open chain- medially rotates the tibia (locks knee)
Flexor Digitorum Longus
Origin: medial side of posterior surface of tibia
Insertion: distal phalanges of the lateral 4 toes
Innervation: tibial nerve (L4-S2)
Action: flexes lateral 4 toes
Flexor Hallucis Longus
Origin: inferior two-thirds of posterior surface of fibula and interosseous membrane
Insertion: plantar surface of distal phalanx of great toe
Innervation: tibial nerve
Action: flexes great toe, inversion and plantar flexion
Tibialis Posterior
Origin: posterior surface of interosseous membrane and shafts of tibia and fibula
Insertion: tuberosity of navicular and medial cuneiform
Innervation: tibial nerve
Action: inversion and plantarflexion of foot
