extensor carpi radialis longus

長橈側手根伸筋

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. relating to or near the radius; "the radial aspect of the forearm"
11. pneumatic tire that has radial-ply casing (同)radial tire, radial-ply_tire
12. arranged like rays or radii; radiating from a common center; "radial symmetry"; "a starlike or stellate arrangement of petals"; "many cities show a radial pattern of main highways" (同)stellate, radiate
13. issuing in rays from a common center; relating to rays of light; "radial heat"
14. relating to or moving along or having the direction of a radius; "radial velocity"
15. a motor vehicle with four wheels; usually propelled by an internal combustion engine; "he needs a car to get to work" (同)auto, automobile, machine, motorcar
16. where passengers ride up and down; "the car was on the top floor" (同)elevator car
17. the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant (同)gondola
18. a wheeled vehicle adapted to the rails of railroad; "three cars had jumped the rails" (同)railcar, railway car, railroad car
19. any of various freshwater fish of the family Cyprinidae
20. the lean flesh of a fish that is often farmed; can be baked or braised

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. 光線の / 放射状の / 半径の
4. =radial-ply tire
5. 『自動車』(automobile)電車(streetcar) / 《米》(鉄道の)『車両』;客車,貨車 / (気球などの)かご;(エレベーターの)箱
6. コイ
7. (…の)揚げ足取りをする,(…を)とがめだてする《+『at』(『about』)+『名』》
8. あら捜しの,口やかましい

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/12/07 22:55:33」(JST)

wiki en

[Wiki en表示]

Extensor carpi radialis longus
Superficial muscles of the forearm. Extensor carpi radialis longus visible in blue.
Transverse section across the wrist and digits. (Ext. carp. rad. long. labeled at center left.)
Latin	musculus extensor carpi radialis longus
Gray's	subject #125 452
Origin	lateral supracondylar ridge
Insertion	2nd metacarpal
Artery	radial artery
Nerve	radial nerve
Actions	extensor at the wrist joint, abducts the hand at the wrist
Antagonist	Flexor carpi radialis muscle

Extensor carpi radialis longus is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone (metacarpal of the index finger).

Function

As the name suggests, this muscle is an extensor at the wrist joint and travels along the radial side of the arm, so will also abduct (radial abduction) the hand at the wrist. That is, it manipulates the wrist so as to move the hand towards the thumb (i.e., abduction—away from the mid-position of the hand) and away from the palmar side (i.e., extension—increased angle between the palm and the front of the forearm).

Origin, course, and insertion

It originates from the lateral supracondylar ridge of the humerus, from the lateral intermuscular septum, and by a few fibers from the lateral epicondyle of the humerus.

The fibres end at the upper third of the forearm in a flat tendon, which runs along the lateral border of the radius, beneath the Abductor pollicis longus and Extensor pollicis brevis; it then passes beneath the dorsal carpal ligament, where it lies in a groove on the back of the radius common to it and the Extensor carpi radialis brevis, immediately behind the styloid process.

One of the three muscles of the radial forearm group, it initially runs along with brachioradialis, but becomes mostly tendon early on. Passing between brachioradialis and extensor carpi radialis brevis, this tendon continues into the second tendon compartment together with the latter muscle.

It is inserted into the dorsal surface of the base of the second metacarpal bone, on its radial side.

Innervation

The extensor carpi radialis longus is a wrist extensor that is innervated by the radial nerve. Though the radial nerve receives contributions from vertebrae levels C5, C6, C7, C8 and T1, studies have shown that the neurons that innervate the extensor carpi radialis longus arise from cervical vertebrae levels C6 and C7. All other major extensor muscles in the superficial layer of the posterior compartment (the Extensor Digitorum, Extensor Carpi Radialis Brevis, Extensor Carpi Ulnaris, and the Extensor Digiti Minimi) are innervated by the posterior interosseous branch of the radial nerve.

Exercises

The muscle, like all extensors of the forearm, can be strengthened by exercise that resist its extension. A wrist roller can be used and reverse wrist curls with dumbbells can performed.

Additional images

Bones of left forearm. Posterior aspect.   Bones of the left hand. Dorsal surface.   Tendons of forefinger and vincula tendina.   Cross-section through the middle of the forearm.   Posterior surface of the forearm. Deep muscles.   Transverse section across distal ends of radius and ulna.   The mucous sheaths of the tendons on the back of the wrist.   Extensor carpi radialis longus muscle   Extensor carpi radialis longus muscle   Extensor carpi radialis longus muscle   Extensor carpi radialis longus muscle   Extensor carpi radialis longus muscle

Notes

References

• Platzer, Werner (2004). Color Atlas of Human Anatomy, Vol. 1: Locomotor System (5th ed.). Thieme. ISBN 3-13-533305-1.

External links

• -1912209407 at GPnotebook

UpToDate Contents

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• 5. overuse（慢性）腱障害の概要 overview of overuse chronic tendinopathy

English Journal

• Is synergistic organisation of muscle coordination altered in people with lateral epicondylalgia? A case-control study.

• Heales LJ1, Hug F2, MacDonald DA3, Vicenzino B4, Hodges PW5.
• Clinical biomechanics (Bristol, Avon).Clin Biomech (Bristol, Avon).2016 Jun;35:124-31. doi: 10.1016/j.clinbiomech.2016.04.017. Epub 2016 May 2.
• BACKGROUND: Lateral epicondylalgia is a common musculoskeletal disorder and is associated with deficits in the motor system including painful grip. This study compared coordination of forearm muscles (muscle synergies) during repeated gripping between individuals with and without lateral epicondylal
• PMID 27179317

• Electrical stimulation and blood flow restriction increase wrist extensor cross-sectional area and flow meditated dilatation following spinal cord injury.

• Gorgey AS1,2, Timmons MK3, Dolbow DR4, Bengel J5,6, Fugate-Laus KC5, Michener LA7, Gater DR8.
• European journal of applied physiology.Eur J Appl Physiol.2016 Jun;116(6):1231-44. doi: 10.1007/s00421-016-3385-z. Epub 2016 May 7.
• PURPOSE: To examine the effects of neuromuscular electrical stimulation (NMES) and blood flow restricted (BFR) exercise on wrist extensors cross-sectional area (CSA), torque and hand functions compared NMES only in individuals with incomplete tetraplegia. The acute effect of an acute bout of NMES wi
• PMID 27155846

• Results of wrist extension reconstruction in C5-8 brachial plexus palsy by transferring the pronator quadratus motor branch to the extensor carpi radialis brevis muscle.

• Bertelli JA1,2, Ghizoni MF1, Tacca CP2.
• Journal of neurosurgery.J Neurosurg.2016 May;124(5):1442-9. doi: 10.3171/2015.3.JNS142428. Epub 2015 Oct 2.
• OBJECT The objective of this study was to report the results of pronator quadratus (PQ) motor branch transfers to the extensor carpi radialis brevis (ECRB) motor branch to reconstruct wrist extension in C5-8 root lesions of the brachial plexus. METHODS Twenty-eight patients, averaging 24 years of ag
• PMID 26430841

Japanese Journal

• Optimum position and orientation of handrail for sit-to-stand movement

• Journal of Advanced Mechanical Design, Systems, and Manufacturing 9(3), JAMDSM0036-JAMDSM0036, 2015
• NAID 130005093317

• 三次元手関節モデルを用いた橈・尺屈シミュレーション

• 日本機械学会論文集 81(827), 14-00653-14-00653, 2015
• NAID 130005089662

• 三次元手関節モデルを用いた橈・尺屈シミュレーション

• 日本機械学会論文集 advpub(0), 2015
• NAID 130005076431

Related Links

• 長橈側手根伸筋 - Wikipedia

長橈側手根伸筋（ちょうとうそくしゅこんしんきん、extensor carpi radialis longus muscle）は人間の上肢の筋肉で手関節の背屈、橈屈を行う。 上腕骨外側上顆から 起こり、第2中手骨底背側で停止する。

• Extensor carpi radialis longus muscle - Wikipedia, the free ...

Extensor carpi radialis longus is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone ( metacarpal of the ...

Related Pictures

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★リンクテーブル★

リンク元	「長橈側手根伸筋」
関連記事	「radial」「carp」「long」「car」「carpi」

「長橈側手根伸筋」

　　[★]

英

extensor carpi radialis longus (K), ECRL, extensor carpi radialis longus muscle

関

短橈側手根伸筋、橈側手根伸筋

• 図：N.403(筋の付着)

起始

• 上腕骨(外側上顆)、尺骨(回外筋稜) ←外側顆上稜の方がよいかも (N.403)
• 上腕外側縁 (KL.789)

停止

• 第2中手骨(骨底背面)

神経

• 橈骨神経

機能

• 手関節の背屈、橈屈
• 尺側手根伸筋と働いたとき (KL.96)
  • 手根を伸展(背屈)
• 橈側手根屈筋と働いたとき (KL.96)
  • 手根を外転(橈屈)

カテゴリ

前腕の伸筋＞:前腕の伸筋

「radial」

　　[★]

• adj.

• 放射状の、放線状の、(解剖)橈骨の、橈側の

関

radiant、radiata、radiatum、radii、radius

　 　 　 　 　 　 　

「carp」

　　[★]

コイ

関

Barbus、Cyprinidae、Cypriniformes、Cyprinus、Cyprinus carpio、loach、minnow、roach、Rutilus rutilus

　 　 　 　

「long」

　　[★]

長い、望む

関

desire、hope、lengthy、wish

　 　 　 　 　 　 　 　 　 　 　

「car」

　　[★]

• n.

• 自動車

関

automobile、motor vehicle

　 　 　 　 　

「carpi」

　　[★]

• (pl.))(解剖)手根

関

carpal、carpus