flexor carpi ulnaris

尺側手根屈筋

WordNet

1. exhibit the strength of; "The victorious army flexes its invincibility"
2. the act of flexing; "he gave his biceps a flex to impress the ladies"
3. bend a joint; "flex your wrists"; "bend your knees" (同)bend
4. 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
5. contract; "flex a muscle"
6. 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
7. where passengers ride up and down; "the car was on the top floor" (同)elevator car
8. the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant (同)gondola
9. a wheeled vehicle adapted to the rails of railroad; "three cars had jumped the rails" (同)railcar, railway car, railroad car
10. any of various freshwater fish of the family Cyprinidae
11. the lean flesh of a fish that is often farmed; can be baked or braised
12. relating to or near the ulna

PrepTutorEJDIC

1. (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
2. 電線,電気のコード
3. 『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
4. コイ
5. (…の)揚げ足取りをする,(…を)とがめだてする《+『at』(『about』)+『名』》
6. 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）』「2014/03/07 10:55:52」(JST)

wiki en

[Wiki en表示]

Flexor carpi ulnaris
Dorsal (left) and ventral (right) views of deep muscles of the forearm. FCU is visible in blue.
Latin	musculus flexor carpi ulnaris
Gray's	p.447
Origin	medial epicondyle (common flexor tendon)
Insertion	pisiform
Artery	ulnar artery
Nerve	muscular branches of ulnar nerve
Actions	flexion and adduction of wrist
Antagonist	Extensor carpi radialis brevis muscle, Extensor carpi radialis longus muscle
Anatomical terms of muscle

The flexor carpi ulnaris (FCU) muscle is a muscle of the human forearm that acts to flex and adduct the hand.

Origin and insertion

Flexor carpi ulnaris muscle arises by two heads - humeral and ulnar, connected by a tendinous arch beneath which the ulnar nerve and ulnar artery pass.

• The humeral head arises from the medial epicondyle of the humerus by the common flexor tendon.
• The ulnar head arises from the medial margin of the olecranon of the ulna and from the upper two-thirds of the dorsal border of the ulna by an aponeurosis.

Its insertion is into the pisiform bone and then via ligaments into the hamate bone and 5th metacarpal bone, acting to flex and adduct the wrist joint.

Innervation

Ulnar nerve (C8, T1)

Tendon

The tendon of flexor carpi ulnaris can be seen on the anterior of the distal forearm. On a person's distal forearm, right before the wrist, there will be either two or three tendons. The tendon of the flexor carpi ulnaris is the most medial (closest to the little finger) of these. The most lateral one is the tendon of flexor carpi radialis muscle, and the middle one, not always present, is the tendon of palmaris longus.

Exercises

The muscle, like all flexors of the forearm, can be strengthened by exercises that resist its flexion. A wrist roller can be used and wrist curls with dumbbells can also be performed. These exercises are used to prevent injury to the ulnar collateral ligament of elbow joint.

Disease

Ulnar entrapment by the aponeurosis of the 2 heads of the flexor carpi ulnaris (FCU) muscle may cause cubital tunnel syndrome.

Additional images

• Bones of left forearm. Posterior aspect.

• Bones of the left hand. Volar surface showing its insertion into the pisiform bone and then via ligaments into the hamate bone and 5th metacarpal bone, acting to flex and adduct the wrist joint.

• Cross-section through the middle of the forearm.

• Flexor carpi ulnaris muscle

External links

• UWASH flexorcarpiulnaris
• Origin, insertion and nerve supply of the muscle at Loyola University Chicago Stritch School of Medicine

UpToDate Contents

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• 1. 急性の手首の疼痛を有する成人患者の評価 evaluation of the adult with acute wrist pain
• 2. 豆状骨骨折 pisiform fractures
• 3. 亜急性または慢性の手首の疼痛を有する成人の評価 evaluation of the adult with subacute or chronic wrist pain
• 4. 手首の解剖学および基本的な生体力学 anatomy and basic biomechanics of the wrist
• 5. 肘および手首の尺骨神経障害 ulnar neuropathy at the elbow and wrist

English Journal

• The effects of forearm fatigue on baseball fastball pitching, with implications about elbow injury.

• Wang LH1, Lo KC2, Jou IM3, Kuo LC4, Tai TW5, Su FC6.
• Journal of sports sciences.J Sports Sci.2016 Jun;34(12):1182-9. doi: 10.1080/02640414.2015.1101481. Epub 2015 Oct 20.
• This study investigated the contribution of flexor muscles to the forearm through fatigue; therefore, the differences in forearm mechanisms on the pitching motion in fastball were analysed. Fifteen baseball pitchers were included in this study. Ultrasonographical examination of participants' ulnar n
• PMID 26484578

• 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

• The Effect of Radial Extracorporeal Shock Wave Stimulation on Upper Limb Spasticity in Chronic Stroke Patients: A Single-blind, Randomized, Placebo-controlled Study.

• Dymarek R1, Taradaj J2, Rosińczuk J3.
• Ultrasound in medicine & biology.Ultrasound Med Biol.2016 Apr 25. pii: S0301-5629(16)00145-9. doi: 10.1016/j.ultrasmedbio.2016.03.006. [Epub ahead of print]
• The main purpose of this study was to determine the clinical, electrophysiological and thermal effects of radial extracorporeal shock wave (rESW) stimulation on upper limb muscles affected by spasticity in patients with chronic stroke. Patients included in the study were randomly assigned into the f
• PMID 27126239

Japanese Journal

• 臨床室 橈骨遠位端骨折後の尺骨頭掌側脱臼に合併した多発性屈筋腱皮下断裂の1例

• 橋本 忠晃,谷口 泰徳,北野 岳史 [他]
• 整形外科 62(6), 531-533, 2011-06
• NAID 40018849192

• 前腕筋および上腕筋への振動刺激が手関節と肘関節の同時運動に与える影響

• 関 博之,与那 正栄,内藤 祐子,室 増男
• 体力科學 60(2), 229-237, 2011-04-01
• … In first experiment, a vibratory stimulation was applied to either the flexor carpi ulnaris (FCU) or the biceps brachii (BB) muscle during simple and simultaneous extension movement about wrist and elbow. … In second experiment, vibratory stimulation was applied to either the extensor carpi radialis (ECR) or the triceps brachii (TB) muscle during simple and simultaneous flexion movement about wrist and elbow. …
• NAID 10028104332

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★リンクテーブル★

リンク元	「尺側手根屈筋」「FCU」
関連記事	「carp」「flex」「ulnar」「car」「flexor」

「尺側手根屈筋」

　　[★]

英

flexor carpi ulnaris (K) FCU, flexor carpi ulnaris muscle

ラ

musculus flexor carpi ulnaris

• 尺骨神経は前腕では尺側手根屈筋を支配する

起始

上腕骨頭：上腕骨(内側上顆)

尺骨頭　：尺骨(肘頭、後面上部)

停止

豆状骨、豆中手靭帯、第5中手骨

神経

尺骨神経

機能

手関節の掌屈、尺屈

「FCU」

　　[★]

• 家族性寒冷蕁麻疹 familial cold urticaria
• 尺側手根屈筋 flexor carpi ulnaris

同

familial cold urticaria

「carp」

　　[★]

コイ

関

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

　 　 　 　

「flex」

　　[★]

• n.

• 屈曲

• v.

• 曲がる、曲げる

関

bend、bending、curvature、curve、flexion、inflection

　 　 　 　 　 　 　

「ulnar」

　　[★]

• adj.

(前腕の小指側を指して):*尺側の、尺骨の

関

basilic、ulna

　

「car」

　　[★]

• n.

• 自動車

関

automobile、motor vehicle

　 　 　 　 　

「flexor」

　　[★]

• n.

• 屈筋、屈側の、屈側性

関

flexor muscle