Achilles Tendon Muscle

Achilles Tendon Muscle

DEFINITION – What does Achilles Tendon mean?

The Achilles tendon or heel cord, also known as the calcaneal tendon (Latin: Tendo calcaneus), is a tendon of the back of the leg, and the thickest in the human body. It serves to attach the plantaris, gastrocnemius (calf) and soleus muscles to the calcaneus (heel) bone. These muscles, acting via the tendon, cause plantar flexion of the foot at the ankle, and (except soleus) flexion at the knee.

FUNCTION – Achilles Tendon Muscle

Acting via the Achilles tendon, the gastrocnemius and soleus muscles cause plantar flexion of the foot at the ankle. This action brings the sole of the foot closer to the back of the leg. The gastrocnemius also flexes the leg at the knee. Both muscles are innervated by the tibial nerve.

Vibration of the tendon without vision has a major impact on postural orientation. Vibration of the tendon causes movement backwards and the illusion of a forward body tilt in standing subjects. This is because vibrations stimulate muscle spindles in the calf muscles. The muscle spindles alert the brain that the body is moving forward, so the central nervous system compensates by moving the body backwards.

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  • Popliteus muscle

Popliteus Muscle

Popliteus Muscle DEFINITION - What does Popliteus mean? Situated at the knee joint, the popliteus is a small muscle

  • Tibialis Anterior muscle

Tibialis Anterior Muscle

Tibialis Anterior Muscle DEFINITION - What does Tibialis Anterior mean? Located mostly near the shin, on the horizontal side

  • Soleus muscle

Soleus Muscle

Soleus Muscle DEFINITION - What does Soleus mean? Running from lightly under the heel and up to the knee,

2018-06-07T09:58:42+00:00