The three plantar interosseous muscles are unipennate, as opposed to the bipennate structure of dorsal interosseous muscles, and originate on a single metatarsal bone. The three muscles originate on the medial aspect of metatarsals III-V. The muscles cross the metatarsophalangeal joint of toes III-V so the insertions correspond with the origin and there is no crossing between toes.[1]
The muscles then continue distally along the foot and insert in the proximal phalanges III-V. The muscles cross the metatarsophalangeal joint of toes III-V so the insertions correspond with the origin and there is no crossing between toes.[1]
Innervationedit
All three plantar interosseous muscles are innervated by the lateral plantar nerve. The lateral plantar nerve is a branch from the tibial nerve, which originally branches off the sciatic nerve from the sacral plexus.[1]
Functionedit
Since the intersseous muscles cross on the metatarsophalangeal joint, then they act on that specific joint and cause adduction of toes III, IV, and V.[1]
Adduction itself is not of extreme importance to the toes, but these muscles work together with the dorsal interosseous muscles in flexion of the foot. They also work together to strengthen the metatarsal arch.[2]
This article incorporates text in the public domain from page 495 of the 20th edition ofGray's Anatomy(1918)
^ abcdSaladin, Kenneth (2012). Anatomy & Physiology: The Unity of Form and Function. New York, NY: McGraw-Hill. pp. 372–372, 498–499. ISBN978-0-07-131638-5.
^O'Rahilly, Ronan. "Basic Human Anatomy". Dartmouth. Retrieved 12 December 2013.
plantar, interossei, muscles, human, anatomy, plantar, interossei, muscles, three, muscles, located, between, metatarsal, bones, foot, interossei, plantares, left, foot, detailsoriginmetatarsals, long, plantar, ligamentinsertionmedial, side, proximal, phalange. In human anatomy plantar interossei muscles are three muscles located between the metatarsal bones in the foot Plantar interossei musclesThe interossei plantares Left foot DetailsOriginMetatarsals long plantar ligamentInsertionMedial side of proximal phalanges of 3rd to 5th toeArteryPlantar artery and dorsal metatarsal ANerveLateral plantar nerveActionsAdduct toesAntagonistDorsal interossei of the footIdentifiersLatinmusculi interossei plantaresTA98A04 7 02 071TA22687FMA37458Anatomical terms of muscle edit on Wikidata Contents 1 Structure 1 1 Innervation 2 Function 3 Additional images 4 See also 5 References 6 External linksStructure editThe three plantar interosseous muscles are unipennate as opposed to the bipennate structure of dorsal interosseous muscles and originate on a single metatarsal bone The three muscles originate on the medial aspect of metatarsals III V The muscles cross the metatarsophalangeal joint of toes III V so the insertions correspond with the origin and there is no crossing between toes 1 The muscles then continue distally along the foot and insert in the proximal phalanges III V The muscles cross the metatarsophalangeal joint of toes III V so the insertions correspond with the origin and there is no crossing between toes 1 Innervation edit All three plantar interosseous muscles are innervated by the lateral plantar nerve The lateral plantar nerve is a branch from the tibial nerve which originally branches off the sciatic nerve from the sacral plexus 1 Function editSince the intersseous muscles cross on the metatarsophalangeal joint then they act on that specific joint and cause adduction of toes III IV and V 1 Adduction itself is not of extreme importance to the toes but these muscles work together with the dorsal interosseous muscles in flexion of the foot They also work together to strengthen the metatarsal arch 2 Additional images edit nbsp Bones of the right foot Plantar surface nbsp Muscles of the sole of the foot See also editInterosseous muscles of the hand Dorsal interossei of the hand Palmar interossei Interosseous muscles of the foot Dorsal interossei of the foot This article uses anatomical terminology References edit nbsp This article incorporates text in the public domain from page 495 of the 20th edition of Gray s Anatomy 1918 a b c d Saladin Kenneth 2012 Anatomy amp Physiology The Unity of Form and Function New York NY McGraw Hill pp 372 372 498 499 ISBN 978 0 07 131638 5 O Rahilly Ronan Basic Human Anatomy Dartmouth Retrieved 12 December 2013 External links editPTCentral Portal nbsp Anatomy Retrieved from https en wikipedia org w index php title Plantar interossei muscles amp oldid 1222233340, wikipedia, wiki, book, books, library,
