Los interóseos dorsales son un grupo de músculos intrínsecos del pie. Constituyen la capa más profunda de los músculos plantares y tienen forma peniforme. Inserciones: se origina en la cara externa de los metatarsianos. El primer músculo se inserta en la cara medial de la falange proximal del segundo dedo. Los músculos interóseos del segundo al cuarto se insertan en los lados laterales de las falanges proximales de los dedos segundo a cuarto. Acciones: abducción de los cuatro dedos laterales y flexión en las articulaciones metatarsofalángicas. Inervación: nervio plantar lateral. Irrigación sanguínea: arteria dorsal del pie, dorsal metatarsiana, plantar lateral y plantar metatarsiana. By TeachMeSeries Ltd (2026) Fig. 5: La cuarta capa de los músculos plantares. Observa la forma semipeniforme de los músculos interóseos plantares y la forma peniforme de los músculos interóseos dorsales 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 dorsal interossei muscles of the foot? The dorsal interossei muscles are intrinsic muscles located in the foot, forming the deepest layer of the plantar muscles. They have a peniform shape and are responsible for the abduction of the lateral four toes. Where do the dorsal interossei muscles attach in the foot? These muscles originate from the external surfaces of the metatarsals and insert onto the proximal phalanges of the second to fourth toes. The first muscle specifically attaches to the medial side of the second toe's proximal phalanx. What is the primary function of the dorsal interossei muscles? The main functions of the dorsal interossei muscles are to abduct the second to fourth toes and to flex the metatarsophalangeal joints. This action is crucial for maintaining balance and stability during activities such as walking. Which nerve innervates the dorsal interossei muscles? The dorsal interossei muscles are innervated by the lateral plantar nerve. This nerve is responsible for providing motor function to these muscles, enabling their actions. What is the blood supply to the dorsal interossei muscles? The dorsal interossei muscles receive blood from several sources, including the dorsal artery of the foot, the dorsal metatarsal arteries, and the lateral and plantar metatarsal arteries. This vascular supply is essential for their function and health. Rate This Article