ORIGIN

Medial head: the depression at the upper and posterior part of the medial condyle of the femur and continuing behind the adductor tubercle to a slightly raised area on the popliteal surface of the femur, just above the medial condyle
Lateral head: area on the lateral surface of the lateral condyle of the femur and to the lower part of the corresponding supracondylar line

 

INSERTION

Receives the tendon of soleus on its deep surface to form the Achilles tendon to attach to the middle of three facets on the posterior surface of the calcaneus

 

ACTION

Plantarflexion of the foot at  the ankle, assists with flexion of the leg at the knee

 

INNERVATION

Tibial nerve S1-2

 

PRIMARY JOINT

Ankle joint

Knee joint

 

KEY STRENGTH TRAINING EXERCISES

Standing/seated Calf raises

 

NEW STRENGTH TRAINING EXERCISES

Balance board

Ankle circles

 

COMMON INJURIES

Muscle sprain/strain of the calf

Overuse