
The Quadratus Plantae Origin, Insertion, Action
Origin: Lateral head: attaches to the lateral side of the calcaneus and to the long plantar ligament
Medial Head: attaches to the medial surface of the calcaneus
Medial Head: attaches to the medial surface of the calcaneus
Insertion: Attaches into the dorsal and plantar surface of the tendons of the flexor digitorum longus.
Actions: Assists with flexion of the four small toes
Innervation: Lateral plantar nerve (S1, S2, S3)
Blood Supply: Branches of the posterior tibial artery
Primary Actions of the Quadratus Plantae
The quadratus plantae does not have a primary action
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Seconday Actions of the Quadratus Plantae
1. Assists flexion of the 2nd – 4th toes
