Quadratus plantae muscle
Muscle on the bottom of the foot that assists in flexing the toes
The quadratus plantae (also known as the flexor accessorius) is a muscle located in the foot. It is one of the muscles in the sole of the foot and plays a crucial role in the movement of the toes.
Anatomy[edit | edit source]
The quadratus plantae muscle originates from the calcaneus, specifically from the medial and lateral sides of the plantar surface of the heel bone. It inserts into the tendons of the flexor digitorum longus muscle.
Blood Supply[edit | edit source]
The muscle receives its blood supply from the lateral plantar artery, a branch of the posterior tibial artery.
Innervation[edit | edit source]
The quadratus plantae is innervated by the lateral plantar nerve, which is a branch of the tibial nerve.
Function[edit | edit source]
The primary function of the quadratus plantae is to assist the flexor digitorum longus in flexing the lateral four digits of the foot. This action is essential for activities such as walking, running, and maintaining balance.
Clinical Significance[edit | edit source]
Injury or dysfunction of the quadratus plantae can lead to difficulties in toe flexion and may contribute to conditions such as plantar fasciitis or other forms of foot pain. Proper functioning of this muscle is important for overall foot mechanics and gait.
See Also[edit | edit source]
- Flexor digitorum longus
- Lateral plantar nerve
- Lateral plantar artery
- Plantar fasciitis
- Muscles of the foot
References[edit | edit source]
Muscles of the hip and human leg | ||||||||||||||||||
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