Tendons are tough, fibrous tissues that connect muscle to bone, enabling movement, stability, and balance in the foot. The primary tendons of the foot and ankle, which dictate its major motions, originate from muscles in the lower leg and route to various insertion points.
The major foot tendons and their primary functions include:
- Achilles Tendon: The largest and strongest tendon in the human body, it connects the calf muscles (gastrocnemius and soleus) to the heel bone (calcaneus). It allows for plantar flexion, which is pointing the foot and toes downward to push off the ground when walking or running.
- Posterior Tibial Tendon: Originates deep in the calf and runs down the inside of the ankle. It inserts into the bones of the midfoot and is primarily responsible for inverting the foot (turning it inward) and supporting the foot’s arch.
- Anterior Tibial Tendon: Runs down the front of the shin to the midfoot, allowing for dorsiflexion (pulling the foot and toes upward toward the shin).
- Peroneal Tendons (Longus and Brevis): Run along the outside of the ankle and foot. They pull the foot outward (eversion) and help stabilize the outer ankle and arch.
- Extensor Tendons: Located on the top surface of the foot, these tendons connect lower leg muscles to the toes, enabling you to straighten and lift your toes.
- Flexor Tendons: Located on the bottom (plantar) surface of the foot, these connect lower leg and foot muscles to the toes, allowing you to bend and stabilize your toes against the floor.
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