Triceps surae muscle

Triceps surae muscle is a pair of muscles located at the calf of the lower leg in humans. It is composed of two muscles: the gastrocnemius muscle and the soleus muscle. These muscles both insert into the calcaneus, the heel bone, and are innervated by the tibial nerve. The triceps surae is involved in plantar flexion of the foot and aids in locomotion.

Structure

The triceps surae consists of the gastrocnemius, which has two heads, and the soleus, which is located deep to the gastrocnemius. The gastrocnemius is the larger and more superficial of the two muscles, and forms the bulk of the calf. The soleus is a broad, flat muscle that lies underneath the gastrocnemius.

Function

The triceps surae is a powerful plantar flexor. It is used during walking, running, and jumping. The gastrocnemius also aids in flexion of the knee.

Clinical significance

Injury to the triceps surae can result in a calf strain, which is a common sports injury. Treatment typically involves rest, ice, compression, and elevation. In severe cases, surgery may be required.

See also

• List of muscles of the human body
• Achilles tendon

References

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