Ventricles, meninges and blood vessels of the brain, 1: Medial base of proximal phalanx of digit, Metatarsophalangeal joints 2-4: toe flexion, toe abduction; Interphalangeal joints 2-4: toe extension. Edinburgh: Churchill Livingstone. Nerve supply The four muscles are innervated by the lateral plantar nerve (S2-S3), with the (most lateral) fourth interossei by the superficial branch, and the other three by the deep branch. Edinburgh: Elsevier Churchill Livingstone. The vascularization of dorsal interossei muscles comes from several small arteries in the foot; Although small, the dorsal interossei are strong muscles that in synergy with the plantar interossei flex the lateral three toes at the metatarsophalangeal joints. “I would honestly say that Kenhub cut my study time in half.” Each arises from two metatarsals. 2020 Dorsal interossei of the foot: Identifiers; Latin: Musculi interossei plantares: TA98: A04.7.02.071: TA2: 2687: FMA: 37458: Anatomical terms of muscle [edit on Wikidata] In human anatomy, plantar interossei muscles are three muscles located between the metatarsal bones in the foot Structure. The four interossei muscles are bipenniform muscles each originating by two heads from the proximal half of the sides of adjacent metatarsal bones. Dorsal interosseous compression syndrome is felt as pain on the top of your foot. Last reviewed: October 29, 2020 Gray's Anatomy (41tst ed.). [2], Abduction is of little importance in the foot, but, together with the plantar interossei, the dorsal interossei also produce flexion at the metatarsophalangeal joints. Dorsal interossei muscles also contribute to the stability of the foot by supporting the anterior metatarsal, medial and lateral arches of the foot in running, walking and jumping. The dorsal interossei muscles are a group of four bicephalic feather-shaped muscles that fill the space between the metatarsal bones of the foot. Standring, S. (2016). Nerve supply The four muscles are innervated by the lateral plantar nerve (S2-S3), with the (most lateral) fourth interossei by the superficial branch, and the other three by the deep branch. The dorsal interossei also help in maintaining the anterior metatarsal arch of the foot. The tendon of the first (most medial) dorsal interosseus muscle inserts onto the medial base of the second proximal phalanx, while the lateral three muscles insert onto the lateral bases of second to fourth proximal phalanges. The vascularization of dorsal interossei muscles comes from several small arteries in the foot; Anterior tibial artery, via dorsalis pedis and dorsal metatarsal arteries Dorsal interossei muscles run deep to the muscles of the third layer of the plantar muscles; flexor hallucis brevis, adductor hallucis and flexor digiti minimi brevis. Dorsal interosseous muscles of the foot strain can be classified into stable and unstable strains as is the case with most of the strains. The muscle fibers converge toward each other to give off a narrow tendon that continues its course towards the phalanges. [1], All dorsal interossei are innervated by the lateral plantar nerve (S2–3). Dorsal interosseous muscle strains are difficult to diagnose due to the location of the muscles. Anatomy and human movement: structure and function (6th ed.). Blood supply. • Philadelphia, PA: Saunders. [1] The tendons are inserted on the bases of the second, third, and fourth proximal phalanges[2] and into the aponeurosis of the tendons of the extensor digitorum longus[3] without attaching to the extensor hoods of the toes. [4], In the angular interval left between the heads of each of the three lateral muscles, one of the perforating arteries passes to the dorsum of the foot; through the space between the heads of the first muscle the deep plantar branch of the dorsalis pedis artery enters the sole of the foot. The heads of each dorsal interossei originate from the opposing surfaces of metatarsal bones. To expand your knowledge check out our video about central muscles of the sole of foot, and then test your knowledge with our quiz about muscles of the foot. - See: Plantar Muscles of the Foot: Origin: there are 4 dorsal interossei which arise by double pennate fibers from the bases and sides of the bodies of adjacent bones. Jana Vasković Dorsal interossei (foot) Medically reviewed by the Healthline Medical Network — Written by the Healthline Editorial Team on January 21, 2018 There are four dorsal interossei muscles in the foot. and grab your free ultimate anatomy study guide! The dorsal interossei muscles originate with two heads from opposing surfaces of adjacent metatarsal bones.. Insertion. This arrangement of dorsal interossei makes the second toe the midline of the foot, whereas the midline of the hand (marked by dorsal interossei of hand) is in the third finger. This action is important as it positions the toes in a way that flexor digitorum longus and brevis can perform their activity during jumping and running. In this article, we will discuss the anatomy and function of the dorsal interossei muscles of the foot. The second to fourth interossei connect to the lateral sides […] Kim Bengochea, Regis University, Denver, Author: To see a 3D model of the dorsal interossei of the foot follow this link. [3], The dorsal interossei abduct at the metatarsophalangeal joints of the third and fourth toes. Insertion: base of the proximal phalanx and aponeurosis of the tendons of the Extensor digitorum longus.. Dorsal interossei muscles of the foot: want to learn more about it? Netter, F. (2019). Reviewer: Because there is a pair of dorsal interossei muscles attached on both sides of the second toe, simultaneous contraction of these muscles results in no movement. These openings between the heads of second to fourth muscles serve as passageways for posterior perforating arteries on their way to the sole of foot, while the corresponding opening between the heads of the first dorsal interosseus muscle transmits the dorsalis pedis artery. Their function lies in spreading the toes apart and in flexing the metatarsophalangeal joints of the second to the fifth toe. Since the heads of dorsal interossei converge toward each other in an anteromedial fashion, they bound the angular spaces in the proximal parts of intermetatarsal intervals. [1] The first and second dorsal interossei muscles additionally receive innervation from the lateral branch of the deep fibular nerve. [3], This article incorporates text in the public domain from page 495 of the 20th edition of Gray's Anatomy (1918), Four muscles situated between the metatarsal bones, https://en.wikipedia.org/w/index.php?title=Dorsal_interossei_of_the_foot&oldid=984535366, Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918), Creative Commons Attribution-ShareAlike License, This page was last edited on 20 October 2020, at 16:17. Kenhub. The dorsal interossei also help in maintaining the anterior metatarsal arch of the foot. These muscles are known as bipennate muscles, which means that they consist of two muscle bellies that converge towards the centrally positioned tendon. Dorsal interossei muscles are the two-headed muscles found between the metatarsal bones 1-5. Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster. [1], Because of the relationship to the metatarsophalangeal joints, the interossei muscles also contribute to maintaining the anterior metatarsal arch of the foot and also, to a limited extent, the medial and lateral longitudinal arches of the foot. Dorsal interossei muscles of the foot are innervated by lateral plantar nerve (S2-S3), which is a branch of the tibial nerve. Dorsal interosseous muscle strains are difficult to diagnose due to the location of the muscles. Atlas of Human Anatomy (7th ed.). [1], Thus, the first is inserted into the medial side of the second toe; the other three are inserted into the lateral sides of the second, third, and fourth toes. Those in the fourth interosseous space are innervated by the superficial branch and the other by the deep branch.