Quadratus Plantae - Podcast Version TeachMeAnatomy 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The quadratus plantae is an intrinsic muscle of the foot. It is located within the second plantar muscle layer of the foot, and is a square-shaped muscle with two heads of origin. Attachments: Originates from the medial and lateral plantar surface of the calcaneus. It attaches to the tendons of flexor digitorum longus. Actions: Assists the flexor digitorum longus in flexion of the lateral four toes. Innervation: Lateral plantar nerve (branch of the tibial nerve) Blood Supply: Medial and lateral plantar arteries. By TeachMeSeries Ltd (2025) Fig 1The second layer of the plantar muscles. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Rate This Article