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DukePALegMuscles
Leg Muscles
| Question | Answer |
|---|---|
| Gastrocnemius | Flex knee and plantarflex ankle |
| Soleus | Plantarflex ankle Does not cross knee |
| Plantaris | Weakly flex knee, plantarflex ankle |
| Calcaneal Tendon | Achilles Tendon - gastrocnemius, soleus and plantaris come together to form this |
| What innervates Gastrocnemius, Soleus and Plantaris? | Tibial Nerve |
| Popliteus | Unlocks knee from extended position (Rotates femur laterally) |
| Flexor Digitorum Longus | Plantar Flex Ankle Flex digits 2-5 |
| Flexor Hallucis Longus | Weakly plantar flex ankle Flex big toe |
| Tibialis Posterior | Plantar flex ankle Invert Foot |
| Popliteal Artery splits into: | Anterior Tibial Artery and Posterior Tibial Artery |
| Sciatic Nerve splits into what nerves in the popliteal fossa? | Tibial and Common Fibular Nerves |
| What movements does the muscles of the anterior compartment of the leg make? | Dorsiflex foot, extend toes, invert foot. Innervations: Deep Fibular Nerve |
| What movements does the muscles of the lateral compartment of the leg make? | Evert foot Innervation: Superficial Fibular Nerve |
| Tibialis Anterior | Dorsiflex Ankle Invert Foot Support medial arch of foot |
| Extensor Hallucis Longus | Extend hallux (big toe), dorsiflex ankle |
| Extensor Digitorum Longus | Dorsiflex ankle, extend digits 2-5 |
| Fibularis Longus | Runs across the sole of the foot to insert of base of first metatarsal |
| Fibularis Brevis | Inserts on base of 5th metatarsal |
| Lateral leg muscles are innervated by what? | Superficial Fibular Nerve |
| What does the superficial fibular nerve branch innervate? | Lateral Compartment of Leg |
| What does the deep fibular nerve branch innervate? | Anterior Compartment of the leg |