Leg

What are the cutaneous innervations for the posterior leg at S2?

Lateral sural cutaneous nerve.

Which spinal levels correspond to the Saphenous nerve in the leg?

L3 and L4.

What is the main action of the Extensor Digitorum Longus?

Dorsiflexion and extension of the lateral four digits.

What bone structure is the medial malleolus associated with?

Tibia.

Which nerve innervates the muscle group of the anterior crural compartment?

Deep fibular nerve.

What is the insertion point of the Tibialis Anterior?

Medial and plantar surfaces of the 1st metatarsal and medial cuneiform bone.

What action does the Fibularis Longus perform?

Eversion of the foot.

Which artery supplies blood to the anterior compartment of the leg?

Anterior Tibial Artery.

What is the primary action of the Gastrocnemius muscle?

Plantarflexion and initiation of knee flexion.

What spinal levels are associated with the Tibial nerve?

L4, L5, S1, S2, and S3.

Name the three major blood supplies in the leg.

Anterior Tibial Artery, Posterior Tibial Artery, Fibular Artery.

Where does the Flexor Hallucis Longus originate?

Lower half of the posterior surface of the fibula and the interosseous membrane.

What is the action of the Popliteus muscle?

Unlocks the knee and assists with flexion when the tibia is fixed.

What is the innervation of the Flexor Digitorum Longus?

Tibial nerve.

Which muscle is innervated by the Superficial Fibular nerve?

Fibularis Longus and Fibularis Brevis.

What is the origin of the plantaris muscle?

Lateral epicondyle of the femur.

What does the Deep Fibular nerve innervate in the anterior compartment?

Tibialis Anterior, Extensor Hallucis Longus, Extensor Digitorum Longus, and Fibularis Tertius.

What is the function of the Sural nerve?

Cutaneous innervation to the posterior leg.

List the compartments of the leg.

Anterior, Lateral, Posterior.

What action is associated with the Tibialis Posterior?

Inversion and plantarflexion of the foot.

What do the lateral and medial malleolar grooves accommodate?

Tendons and ligaments around the ankle.

What is the role of the Anterior Tibial A. in the leg?

Supplies blood to the anterior compartment.

Which nerve is responsible for cutaneous sensation to the dorsal foot?

Deep Fibular nerve.

What is the action of the Flexor Hallucis Longus muscle?

Flex the distal phalanx of the great toe.

Describe the location of the calcaneal tuberosity.

Insertion point of the gastrocnemius and soleus muscles.

What is the origin of the Soleus muscle?

Posterior surface of the proximal 1/3rd of the fibula and soleal line of the tibia.

What is the blood supply for the Lateral Crural compartment?

Fibular artery.

What is the insertion for the Fibularis Brevis?

Lateral surface of the base of the 5th metatarsal bone.

What anatomical structure is affected when the lateral condyle of the femur is injured?

Gastrocnemius muscle.

What nerve innervates the superficial layer of the posterior crural compartment?

Tibial nerve.

What muscle helps with plantarflexion of the foot?

Soleus.

Which muscles make up the deep layer of the posterior crural compartment?

Popliteus, Flexor Digitorum Longus, Tibialis Posterior, and Flexor Hallucis Longus.

What is the function of the Dorsal Venous Arch?

Drainage of superficial venous blood from the foot.