superficial posterior compartment of the leg

origin of the lateral head of the gastrocnemius

lateral aspect of the lateral condyle of the femur

origin of the medial head of the gastrocnemius

popliteal surface of the femur

insertion of the gastrocnemius

posterior surface of the calcaneus by way of the calcaneal tendon

action of the gastrocnemius

plantarflexion when the knee is extended

knee flexion

innervation of the gastrocnemius

tibial nerve S1,S2

origin of the soleus

posterior aspect of the fibular head

superior ¼ of the posterior fibular surface

soleal line

medial border of the tibia

tendinous arch

insertion of the soleus

posterior surface of the calcaneus by way of the calcaneal tendon

action of soleus

plantar flexion of the ankle independent of the knee joint

steady the leg on the foot

innervation of the soleus

tibial nerve S1,S2

originof plantaris muscle

inferior portion of the lateral supracondylar line of the femur

oblique popliteal ligament

insertion of plantaris muscle

calcaneus by way of calcaneal tendon

action of plantaris muscle

assist the gastrocnemius in plantarflexion and knee flexion

innervation of the plantaris muscle

tibial nerve S1,S2