Lumbrical muscle (foot)
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| Lumbrical muscle of the foot | ||
|---|---|---|
| Muscles of the sole of the foot. Second layer. (Lumbricals visible at bottom.) | ||
| Latin | musculus lumbricalis pedis | |
| Gray's | subject #131 493 | |
| Origin: | ||
| Insertion: | ||
| Artery: | ||
| Nerve: | plantar nerves | |
| Action: | ||
| Dorlands/Elsevier | m_22/12549758 | |
- For the muscle of the hand, see Lumbrical muscle (hand).
The Lumbricales are four small muscles, accessory to the tendons of the Flexor digitorum longus and numbered from the medial side of the foot; they arise from these tendons, as far back as their angles of division, each springing from two tendons, except the first.
The muscles end in tendons, which pass forward on the medial sides of the four lesser toes, and are inserted into the expansions of the tendons of the Extensor digitorum longus on the dorsal surfaces of the first phalanges. All four lumbricals insert into extensor hoods of the phalanges, thus creating extension at the inter-phalangeal joints. However as the tendons also pass inferior to the metatarsal phalangeal joints it creates flexion at this joint.
Variations
Absence of one or more; doubling of the third or fourth even the fifth . Insertion partly or wholly into the first phalanges.
Innervation
The most medial lumbrical is innervated by the medial plantar nerve while the remaining three lumbricals are supplied by the lateral plantar nerve.
External links
- LUC lumf
- -1966079920 at GPnotebook
- lumbricals+%28lumbrical+muscles%29+of+foot at eMedicine Dictionary
- PTCentral
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
