flexor digitorum longus muscle

• 長指屈筋
• 長趾屈筋

WordNet

1. primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified; "a long life"; "a long boring speech"; "a long time"; "a long friendship"; "a long game"; "long ago"; "an hour long"
2. (of speech sounds or syllables) of relatively long duration; "the English vowel sounds in `bate, `beat, `bite, `boat, `boot are long"
3. for an extended distance
4. for an extended time or at a distant time; "a promotion long overdue"; "something long hoped for"; "his name has long been forgotten"; "talked all night long"; "how long will you be gone?"; "arrived long before he was expected"; "it is long after your bedtime"
5. having or being more than normal or necessary:"long on brains"; "in long supply"
6. holding securities or commodities in expectation of a rise in prices; "is long on coffee"; "a long position in gold"
7. involving substantial risk; "long odds"
8. of relatively great height; "a race of long gaunt men"- Sherwood Anderson; "looked out the long French windows"
9. primarily spatial sense; of relatively great or greater than average spatial extension or extension as specified; "a long road"; "a long distance"; "contained many long words"; "ten miles long"
10. exhibit the strength of; "The victorious army flexes its invincibility"
11. the act of flexing; "he gave his biceps a flex to impress the ladies"
12. bend a joint; "flex your wrists"; "bend your knees" (同)bend
13. cause (a plastic object) to assume a crooked or angular form; "bend the rod"; "twist the dough into a braid"; "the strong man could turn an iron bar" (同)bend, deform, twist, turn
14. contract; "flex a muscle"
15. make ones way by force; "He muscled his way into the office"
16. animal tissue consisting predominantly of contractile cells (同)muscular_tissue
17. one of the contractile organs of the body (同)musculus
18. authority or power or force (especially when used in a coercive way); "the senators used their muscle to get the party leader to resign"

PrepTutorEJDIC

1. (距離・物の長さが)『長い』 / (時間が)『長い』,長く続く / 《時間・距離などを表離などを表す語を伴って》長さが…の / 『長々しい』,あきあきする / (数量が標準よりも)『多い』,長い / (人が)やせてひょろ長い / 長く,長い間,久しく / …じゅう / ずっと(前に,後に) / 長い間
2. 『熱望する』
3. (仕事などを始める準備運動として)〈手足など〉‘を'曲げる,〈筋肉〉‘を'縮める
4. 電線,電気のコード
5. 〈U〉(動物体の組織としての)『筋肉』,筋(きん);〈C〉(体の各部を動かす)筋肉 / 〈U〉力,(特に)筋力,腕力 / 《俗に》(…に)強引に割り込む《+『in on』(『into, through』)+『名』》
6. 筋肉の,筋力のある / 力ずくの

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/11/02 17:18:13」(JST)

wiki en

[Wiki en表示]

Flexor digitorum longus muscle
Tendons of the foot, medial view.
Details
Origin	Posterior surface of the body of the tibia
Insertion	Plantar surface; base of the distal phalanges of the four lesser toes
Artery	posterior tibial artery
Nerve	Tibial nerve
Actions	Flex digits
Antagonist	Extensor digitorum longus, Extensor digitorum brevis
Identifiers
Latin	Musculus flexor digitorum longus
TA	A04.7.02.052
FMA	51071
Anatomical terms of muscle [edit on Wikidata]

The flexor digitorum longus is situated on the tibial side of the leg. At its origin it is thin and pointed, but it gradually increases in size as it descends. This muscle serves to curl the second, third, fourth, and fifth toes (flexion of phalanges dscII-V).

Structure

It arises from the posterior surface of the body of the tibia, from immediately below the soleal line to within 7 or 8 cm. of its lower extremity, medial to the tibial origin of the Tibialis posterior; it also arises from the fascia covering the Tibialis posterior.

The fibers end in a tendon, which runs nearly the whole length of the posterior surface of the muscle. This tendon passes behind the medial malleolus, in a groove, common to it and the tibialis posterior, but separated from the latter by a fibrous septum, each tendon being contained in a special compartment lined by a separate mucous sheath. The tendon of the tibialis posterior and the tendon of the flexor digitorum longus cross each other, in a spot above the medial malleolus, the crural tendinous chiasm.

It passes obliquely forward and lateralward, superficial to the deltoid ligament of the ankle-joint, into the sole of the foot, where it crosses below the tendon of the flexor hallucis longus (plantar tendinous chiasm), and receives from it a strong tendinous slip.

It then expands and is joined by the quadratus plantæ, and finally divides into four tendons, which are inserted into the bases of the last phalanges of the second, third, fourth, and fifth toes, each tendon passing through an opening in the corresponding tendon of the flexor digitorum brevis opposite the base of the first phalanx.

Variation

Flexor accessorius longus digitorum, not infrequent, origin from fibula, or tibia, or the deep fascia and ending in a tendon which, after passing beneath the laciniate ligament, joins the tendon of the long flexor or the quadratus plantæ.

Function

Similar to the flexor hallucis longus and tibialis posterior muscles, the flexor digitorum longus muscle functions to plantar flex and invert the foot. The flexor digitorum longus muscle is responsible for the movement and curling of the second, third, fourth and fifth toes. This muscle makes it possible for the toes to grip the surface of floors, which is important when it comes to maintaining postural balance on surfaces that are rough or uneven. The other deep muscles are the flexor digitorum longus and tibialis posterior; the tibialis posterior is the most powerful of these deep muscles. All three muscles are innervated by the tibial nerve which comprises half of the sciatic nerve.

Injury

After passing through the tarsal tunnel, the flexor digitorum longus tendon must curve around a bony landmark called the sustenaculum tali. Flexor digitorum longus pain can occur with a trip and fall on uneven surface when the toes are not able to grip the surface totally. One can also injure the flexor digitorum longus muscle while running on a beach in the sand without any footwear making the muscle vulnerable at the calcaneus attachment for injuries. In case of flexor digitorum longus pain or strain, the patient will find it tough to walk and will have excruciating pain in the feet and ankles. Support braces along with warm compresses are the most preferred way of treating flexor digitorum longus pain or strain.

Additional images

Bones of the right leg. Posterior surface.  Bones of the right foot. Plantar surface.  Coronal section through right talocrural and talocalcaneal joints.  Muscles of the back of the leg. Deep layer.  Cross-section through middle of leg.  Muscles of the sole of the foot. Second layer.  Circumpatellar anastomosis.  Nerves of the right lower extremity Posterior view.  The plantar nerves.  Muscles of the back of the leg. Deep layer.  Muscles of the back of the leg. Deep layer.  Muscles of the leg.Posterior view  Muscles of the sole of the foot  Dorsum and sole of Foot. Ankle joint. Deep dissection

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• -301596593 at GPnotebook
• Anatomy photo:15:st-0403 at the SUNY Downstate Medical Center
• PTCentral

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 活動的な小児や骨格発達の未成熟な青年の前足部および中足部の痛み：原因の概要 forefoot and midfoot pain in the active child or skeletally immature adolescent overview of causes
• 2. 足首および後足部の運動器超音波 musculoskeletal ultrasound of the ankle and hindfoot
• 3. アキレス腱以外の足首の腱障害 non achilles ankle tendinopathy
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English Journal

• Forearm muscle activity is modified bilaterally in unilateral lateral epicondylalgia: A case-control study.

• Heales LJ1, Vicenzino B1, MacDonald DA1, Hodges PW1.
• Scandinavian journal of medicine & science in sports.Scand J Med Sci Sports.2015 Dec 1. doi: 10.1111/sms.12584. [Epub ahead of print]
• Lateral epicondylalgia (LE) is associated with a reduced wrist extensor muscle activity and altered biomechanics. This study compared the coordination between forearm muscles during gripping in individuals with LE and pain-free controls. Intramuscular electrodes recorded myoelectric activity from ex
• PMID 26620314

• New insights into the origin of the lumbrical muscles of the foot: tendinous slip of the flexor hallucis longus muscle.

• Hur MS1, Kim JH1, Gil YC2, Kim HJ1, Lee KS3.
• Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2015 Dec;37(10):1161-7. doi: 10.1007/s00276-015-1488-6. Epub 2015 May 12.
• PURPOSE: The aim of this study was to clarify the origins of the lumbricals of the foot toward a better understanding of its precise action in the gait.METHODS: The lumbricals in the foot were investigated in 66 specimens of embalmed Korean adult cadavers.RESULTS: The first lumbrical arose as two mu
• PMID 25963118

• Intramuscular nerve distribution pattern of ankle invertor muscles in human cadaver using Sihler stain.

• Yi KH1, Rha DW2, Lee SC2, Cong L1, Lee HJ1, Lee YW1, Kim HJ1, Hu KS1.
• Muscle & nerve.Muscle Nerve.2015 Oct 15. doi: 10.1002/mus.24939. [Epub ahead of print]
• INTRODUCTION: To identify the ideal sites for botulinum toxin injection by examining the intramuscular nerve patterns of the ankle invertors.METHOD: A modified Sihler method was performed on the flexor hallucis longus, tibialis posterior, and flexor digitorum longus muscles (10 specimens each). The
• PMID 26467315

Japanese Journal

• The reliability of shear elastic modulus measurement of the ankle plantar flexion muscles is higher at dorsiflexed position of the ankle

• Journal of Foot and Ankle Research 10, 2017-04-18
• NAID 120006305753

• Ankle and toe muscle strength characteristics in runners with a history of medial tibial stress syndrome

• Journal of Foot and Ankle Research 10, 2017-04-11
• NAID 120006305757

• Musculoskeletal System of Huge Tarsometatarsal Region in the Dong Tao Fowls from North Vietnam

• The Journal of Poultry Science 54(1), 58-65, 2017
• NAID 130005300335

Related Links

• Flexor Digitorum Longus Muscle | Actions | Attachments ...

A tutorial on the attachments, actions, and nerve supply of the flexor digitorum longus muscle, using interactive animations and diagrams. ... :: Flexor Digitorum Longus Muscle ::

• Flexor Digitorum Longus Muscle Anatomy, Function ...

The flexor digitorum longus muscle is located on the inner side of the leg by the tibia. There are two bones in the lower leg: the tibia and fibula. The tibia is located on the inner part of the leg and is the larger of the two bones; it may

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★リンクテーブル★

リンク元	「長趾屈筋」「長指屈筋」
関連記事	「flex」「long」「flexor」「digitorum」「longus」

「長趾屈筋」

　　[★]

英

flexor digitorum longus muscle (KH) ←手の長指屈筋と綴りが同じで紛らわしい

flexor digitorum longus, FDL (K) ←手の長指屈筋と綴りが同じで紛らわしい

同

長指屈筋

関

長母趾屈筋

• 図：N.497(筋の付着部) N.500 N.516(停止)
• この筋は下腿後面から起こり、内果の後ろの方で屈筋支帯を通って足底に至り、第2～第5指の末節骨に付く

起始

• 脛骨(後面の中央部)

停止

• 第2～5趾骨(末節骨底)

神経

• 脛骨神経

機能

• 第2～5趾の屈曲(DIP関節)

「長指屈筋」

　　[★]

英

flexor digitorum longus (KL), flexor digitorum longus muscle

ラ

musculus flexor digitorum longus

同

長趾屈筋

• 足の指なので「長趾屈筋」と表記した方がわかりやすい？

「flex」

　　[★]

• n.

• 屈曲

• v.

• 曲がる、曲げる

関

bend、bending、curvature、curve、flexion、inflection

　 　 　 　 　 　 　

「long」

　　[★]

長い、望む

関

desire、hope、lengthy、wish

　 　 　 　 　 　 　 　 　 　 　

「flexor」

　　[★]

• n.

• 屈筋、屈側の、屈側性

関

flexor muscle

「digitorum」

　　[★]

• extensor digitorum longus muscle

「longus」

　　[★]

• extensor digitorum longus muscle