Joint Action: Plantar flexion

The following muscles produce Plantar flexion at the ankle:

The gastrocnemius muscle is the large calf muscle at the back of the lower leg. It originates above the knee. As a result, it flexes the knee but only very weakly when compared to the

Flexor Digitorum Longus causes the toes to grip and mold to the floor’s surface which is vital in maintaining balance on rough surfaces. The tendons pass under the foot. Walking barefoot on an uneven surface

Flexor Hallucis Longus bends the big toe when you curl up your foot. It is called ‘Hallucis’ as the word Hallux means great or big toe in Latin. This muscle also supports the longitudinal arch

Gastrocnemius is the largest and most superficial of the ankle muscles. Together the Gastrocnemius, Soleus, and Plantaris are known as Triceps Surae. The Gastrocnemius is the main propellant in walking and running.

Peroneus Brevis is one of the peroneal muscles in the ankle which passes down the outside of the lower leg and everts (turn outwards) the foot. These muscles are sometimes referred to as Fibularis brevis

Peroneus Longus is one of the peroneal muscle groups which passes down the outside of the lower leg and everts (turn out) the foot. These muscles are sometimes referred to as fibularis longus and brevis due

Soleus is a large muscle, deep to Gastrocnemius. Together the Gastrocnemius, Soleus, and Plantaris are known as Triceps Surae. Soleus is used constantly in standing to maintain an upright position.

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The Tibialis Posterior is the deepest of all the calf muscles. It helps to support the arch of the foot.

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