The lumbricals are a set of intrinsic muscles of the foot. They are located within the second plantar muscle layer of the foot. Attachments: Originates from the tendons of flexor digitorum longus. Attaches to the extensor hoods of the lateral four digits. Actions: Flexion at the metatarsophalangeal joints and extension at the interphalangeal joints. Innervation: Medial lumbrical – medial plantar nerve. Lateral three lumbricals – lateral plantar nerve. Blood Supply: Lateral plantar artery and the plantar metatarsal arteries. By TeachMeSeries Ltd (2025) Fig 2The 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 Print Article Rate This Article