Lower Leg Flashcards
Tibialis Anterior
Origin
Lateral tibial condyle, proximal 1/2 lateral tibia
Tibialis Anterior
Insertion
Medial plantar surface of 1st metatarsal base and 1st cuneiform
Tibialis Anterior
Innervation
Deep Fibular Nerve (L4-S1)
Tibialis Anterior
Action
Ankle: Dorsi flexion
Foot: inversion
Extensor Digitorum Longus
Origin
Lateral tibial condyle, proximal medial fibula and interosseous membrane
Extensor Digitorum Longus
Insertion
Distal Phalanges toes 2-5
Extensor Digitorum Longus
Innervation
Deep Fibular Nerve (L4-S1)
Extensor Digitorum Longus
Action
Ankle: Dorsi flexion
Foot: extend 2nd-5th digits
Extensor Hallucis Longus
Origin
Medial surface of fibula and interosseous membrane
Extensor Hallucis Longus
Insertion
Distal phalanx 1st toe
Extensor Hallucis Longus
Innervation
Deep Fibular Nerve (L4-S1)
Extensor Hallucis Longus
Action
Ankle: dorsiflexion
Foot: extend 1st digit
Fibularis Tertius
Origin
Distal 1/3rd of anterior fibula and interosseous membrane
Fibularis Tertius
Insertion
Base of 5th metatarsal
Fibularis Tertius
Innervation
Deep Fibular Nerve (L4-S1)
Fibularis Tertius
Action
Ankle: dorsiflexion
Foot: eversion
Fibularis Longus
Origin
Head and proximal 2/3rd lateral fibula
Fibularis Longus
Insertion
Lateral plantar surface of 1st metatarsal base and 1st cuneiform
Fibularis Longus
Innervation
Superficial Fibular Nerve (L5-S1)
Fibularis Longus
Action
Ankle: plantar flexion
Foot: eversion
Fibularis Brevis
Origin
Distal 1/3rd lateral fibula
Fibularis Brevis
Insertion
Base of 5th metatarsal
Fibularis Brevis
Innervation
Superficial Fibular Nerve (L5-S1)
Fibularis Brevis
Action
Ankle: plantar flexion
Foot: eversion
Gastrocnemius
Origin
Medial Head: medial femoral condyle
Lateral Head: lateral femoral condyle
Gastrocnemius
Insertion
Posterior surface of calcaneus
Gastrocnemius
Innervation
Tibial Nerve (L4-S3)
Gastrocnemius
Action
Leg: flexion
Ankle: plantar flexion
Soleus
Origin
Head and proximal fibula, soleal line of tibia
Soleus
Insertion
Posterior surface of calcaneus
Soleus
Innervation
Tibial Nerve (L4-S3)
Soleus
Action
Ankle: plantar flexion
Plantaris
Origin
Lateral supracondylar line
Plantaris
Insertion
Posterior tibia proximal to soleal line
Plantaris
Innervation
Tibial Nerve (L4-S3)
Plantaris
Action
Leg: weak flexion
Ankle: plantar flexion
Popliteus
Origin
Lateral femoral condyle, lateral meniscus of knee
Popliteus
Insertion
Posterior tibia proximal to soleal line
Popliteus
Innervation
Tibial Nerve (L4-S3)
Popliteus
Action
Leg: flexion, medial rotation of tibia
Closed chain: lateral rotation of femur
Tibialis Posterior
Origin
Posterior surface of interosseous membrane, posterior surface of tibia, posterior surface of fibula
Tibialis Posterior
Insertion
Plantar surface of navicular bone, 1-3 cuneiform, cuboid, 2-4 metatarsals
Tibialis Posterior
Innervation
Tibial Nerve (L4-S3)
Tibialis Posterior
Action
Ankle: Plantar flexion
Foot: supination
Flexor Digitorum Longus
Origin
Posterior Surface of tibia
Flexor Digitorum Longus
Insertion
Distal phalanges toes 2-5
Flexor Digitorum Longus
Innervation
Tibial Nerve (L4-S3)
Flexor Digitorum Longus
Action
Ankle: plantar flexion
Foot: flexes 2-5 digits, supination
Flexor Hallucis Longus
Origin
Posterior Surface of tibia
Flexor Hallucis Longus
Insertion
Distal phalanx 1st toe
Flexor Hallucis Longus
Innervation
Tibial Nerve (L4-S3)
Flexor Hallucis Longus
Action
Ankle: plantar flexion
Foot: flexes 1st digit, supination