Posterior Compartment of Leg Flashcards
Groups in the Posterior Compartment
Superficial and Deep
Muscles in the Superficial Group
Gastrocnemius
Plantaris
Soleus
Muscles in the Deep Group
Tibialis Posterior
Flexor Digitorum Longus
Flexor Hallucis Longus
Popliteus
Origin of Gastrocnemius
Medial Head: Femur (superior to Medial Condyle)
Lateral Head: Lateral Femoral Condyle
Insertion of Gastrocnemius
Calcaneus
via calcaneal tendon
Innervation of Gastrocnemius
Tibial Nerve (S1-S2
Function of Gastrocnemius
Plantarflexion @ ankle
Flexion of knee
Origin of Soleus
Head and Neck of Fibula
Soleal Line
Medial Tibia
Insertion of Soleus
Calcaneus
via calcaneal tendon
Innervation of Soleus
Tibial Nerve (S1-S2
Function of Soleus
Plantarflexion @ ankle
Origin of Plantaris
Lateral Supracondylar Line of Femur
Popliteal Ligament
Insertion of Plantaris
Calcaneus
via calcaneal tendon
Innervation of Plantaris
Tibial Nerve (S1-S2
Function of Plantaris
Plantarflexion @ ankle
Flexion of knee
Origin of Popliteus
Lateral Femoral Condyle
Insertion of Popliteus
Proximal Tibia
Innervation of Popliteus
Tibial Nerve (L4-S1)
Function of Popliteus
Laterally Rotates Femur on Tibia (UNLOCKS KNEE)
Stabilises knee joint
Origin of Tibialis Posterior
Interosseus Membrane
Adjacent Tibia and Fibula
Insertion of Tibialis Posterior
Navicular (tuberosity) and Medial Cuneiform
Innervation of Tibialis Posterior
Tibial nerve (L4-L5)
Function of Tibialis Posterior
Plantarflexion @ ankle
Inversion of foot
Medial arch support
Origin of Flexor Digitorum Longus
Medial Posterior Tibia
Insertion of Flexor Digitorum Longus
Distal Phalanges of Toes 2-5
Innervation of Flexor Digitorum Longus
Tibial Nerve (S2-S3
Function of Flexor Digitorum Longus
Flexion of Toes 2-5
Origin of Flexor Hallucis Longus
Fibula
Interosseus Membrane
Insertion of Flexor Hallucis Longus
Distal Phalanx of Toe 1
Innervation of Flexor Hallucis Longus
Tibial Nerve (S2-S3)
Function of Flexor Hallucis Longus
Flexion of Toe 1