Los lumbricales son un conjunto de músculos intrínsecos del pie. Se localizan en la segunda capa muscular plantar del pie. Inserciones: se origina en los tendones del flexor largo de los dedos. Se insertan en las superficies extensoras de los cuatro dedos laterales. Acciones: flexión en las articulaciones metatarsofalángicas y extensión en las articulaciones interfalángicas. Inervación: Nervio lumbrical medial: nervio plantar medial. Tres lumbricales laterales: nervio plantar lateral. Irrigación sanguínea: arteria plantar lateral y arterias metatarsianas plantares. By TeachMeSeries Ltd (2026) Fig. 2: la segunda capa de los músculos plantares. 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 Frequent questions What are the lumbrical muscles of the foot? The lumbrical muscles are intrinsic muscles located in the second plantar layer of the foot. They play a crucial role in the movement of the toes. Where do the lumbrical muscles originate and insert? These muscles originate from the tendons of the flexor digitorum longus and insert on the extensor surfaces of the four lateral toes. This positioning allows them to facilitate toe movement. What actions do the lumbrical muscles perform? The lumbrical muscles are responsible for flexing the metatarsophalangeal joints and extending the interphalangeal joints of the toes. This dual action is essential for effective foot function. How are the lumbrical muscles innervated? The medial lumbrical muscle is innervated by the medial plantar nerve, while the three lateral lumbricals receive innervation from the lateral plantar nerve. This innervation is crucial for their motor function. What is the blood supply to the lumbrical muscles? The lumbrical muscles receive blood from the lateral plantar artery and the plantar metatarsal arteries. This vascular supply is vital for their health and function. Rate This Article