腕橈骨筋
- 関
- brachioradial muscle、musculus brachioradialis
- 同
- 腕橈骨筋
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/10/25 12:04:26」(JST)
[Wiki en表示]
| Brachioradial muscle |
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| Anterior view of muscles of the left forearm with Brachioradialis shown in blue. |
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| Cross-section through the middle of the forearm. (Brachioradialis labeled at center left, sixth from the top.) |
| Latin |
musculus brachioradialis |
| Gray's |
subject #125 451 |
| Origin |
Lateral supracondylar ridge of the humerus |
| Insertion |
Distal radius (Radial styloid process) |
| Artery |
radial recurrent artery |
| Nerve |
radial nerve |
| Actions |
Flexion of Elbow |
Brachioradialis is a muscle of the forearm that acts to flex the forearm at the elbow. It is also capable of both pronation and supination, depending on the position of the forearm. It is attached to the distal styloid process of the radius by way of the brachioradialis tendon, and to the lateral supracondylar ridge of the humerus.
Contents
- 1 Action
- 2 Innervation
- 3 Additional images
- 4 References
- 5 External links
Action[edit]
Brachioradialis flexes the forearm at the elbow. When the forearm is pronated, the brachioradialis tends to supinate as it flexes. In a supinated position, it tends to pronate as it flexes.
The brachioradialis is a stronger elbow flexor when the forearm is in a midposition between supination and pronation at the radioulnar joint. When pronated, the brachioradialis is more active during elbow flexion since the biceps brachii is in a mechanical disadvantage.
With the insertion of the muscle so far from the fulcrum of the elbow, the brachioradialis does not generate as much force as the brachialis or the biceps. It is effective mainly when those muscles have already partially flexed at the elbow. The brachioradialis flexes the forearm at the elbow, especially when quick movement is required and when a weight is lifted during slow flexion of the forearm. The muscle is used to stabilize the elbow during rapid flexion and extension while in a midposition, such as in hammering. The brachioradialis is synergistic with the brachialis and biceps brachii; the triceps brachii and anconeus are antagonistic.[1][2]
Innervation[edit]
Despite the bulk of the muscle body being visible from the anterior aspect of the forearm, the brachioradialis is a posterior compartment muscle and consequently is innervated by the radial nerve. Of the muscles that receive innervation from the radial nerve, it is one of only four that receive input directly from the radial nerve. The other three are the triceps, anconeus, and extensor carpi radialis longus. (All other posterior compartment muscles that receive radial innervation are supplied by the deep branch of the radial nerve.)
Additional images[edit]
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Left humerus. Anterior view.
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Bones of left forearm. Anterior aspect.
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Front of the left forearm. Superficial muscles.
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Posterior surface of the forearm. Superficial muscles.
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The radial and ulnar arteries.
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Ulnar and radial arteries. Deep view.
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Nerves of the left upper extremity.
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Brachioradialis, lateral view
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References[edit]
- ^ Bowden, Bradley S. Bowden, Joan M. An Illustrated Atlas of Skeletal Muscles. 2nd ed. 2002
- ^ Saladin, Kenneth S. Anatomy & Physiology. 4th ed. 2007
External links[edit]
- LUC brds
- UWASH brachioradialis
- SUNY Figs 07:01-09 - "Transverse section through the left arm just proximal to the elbow."
- SUNY Figs 07:03-07 - "Superficial muscles of the anterior (flexor) compartment of the left forearm."
- SUNY Figs 09:02-02 - "Superficial muscles of the posterior (extensor) compartment of the left forearm."
- lesson5musofpostforearm at The Anatomy Lesson by Wesley Norman (Georgetown University)
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List of muscles of upper limbs (TA A04.6, GA 4.432)
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| Shoulder |
deltoid · rotator cuff (supraspinatus, infraspinatus, teres minor, subscapularis) · teres major
fascia: deltoid fascia · supraspinous fascia · infraspinous fascia
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Arm
(compartments) |
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anterior
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coracobrachialis · biceps brachii · brachialis
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posterior
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triceps brachii · anconeus · articularis cubiti
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fascia
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axillary sheath · axillary fascia · brachial fascia · intermuscular septa (lateral, medial)
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other
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spaces (quadrangular space, triangular space, triangular interval)
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| Forearm |
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anterior
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superficial: pronator teres · palmaris longus · flexor carpi radialis · flexor carpi ulnaris · flexor digitorum superficialis
deep: pronator quadratus · flexor digitorum profundus · flexor pollicis longus
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posterior
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superficial: mobile wad (brachioradialis, extensor carpi radialis longus and brevis) · extensor digitorum · extensor digiti minimi · extensor carpi ulnaris
deep: supinator · anatomical snuff box (abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus) · extensor indicis
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fascia
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bicipital aponeurosis · common tendons (extensor, flexor) · antebrachial fascia
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other
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cubital tunnel
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| Hand |
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lateral volar
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thenar (opponens pollicis, flexor pollicis brevis, abductor pollicis brevis) · adductor pollicis
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medial volar
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hypothenar (opponens digiti minimi, flexor digiti minimi brevis, abductor digiti minimi) · palmaris brevis
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intermediate
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lumbrical · interossei (dorsal, palmar)
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fascia
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posterior: extensor retinaculum · extensor expansion
anterior: flexor retinaculum · palmar aponeurosis
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anat (h/n, u, t/d, a/p, l)/phys/devp/hist
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noco (m, s, c)/cong (d)/tumr, sysi/epon, injr
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UpToDate Contents
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English Journal
- Modified brachioradialis wrap for stabilizing the distal radioulnar joint: case report.
- Marinello PG1, Peers S1, Bafus BT2, Evans PJ1.
- Hand (New York, N.Y.).Hand (N Y).2015 Dec;10(4):802-6. doi: 10.1007/s11552-015-9752-0. Epub 2015 Mar 18.
- Distal radioulnar joint (DRUJ) stability requires competent static and dynamic soft tissues. Multiple DRUJ techniques have been described in the literature. Our method is a novel modification of the Gupta method of DRUJ stabilization used in a revision reconstruction on a patient with a total wrist
- PMID 26568744
- Absolute and relative intrasession reliability of surface EMG variables for voluntary precise forearm movements.
- Carius D1, Kugler P2, Kuhwald HM3, Wollny R3.
- Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.J Electromyogr Kinesiol.2015 Dec;25(6):860-9. doi: 10.1016/j.jelekin.2015.09.001. Epub 2015 Sep 8.
- The reliability of surface electromyography (EMG) derived parameters is of high importance, but there is distinct lack of studies concerning the reliability during dynamic contractions. Especially Amplitude, Fourier and Wavelet parameter in conjunction have not been tested so far. The interpretation
- PMID 26391454
- A Brachioradialis Splitting Approach Sparing the Pronator Quadratus for Volar Plating of the Distal Radius.
- Kashir A1, O'Donnell T.
- Techniques in hand & upper extremity surgery.Tech Hand Up Extrem Surg.2015 Dec;19(4):176-81. doi: 10.1097/BTH.0000000000000104.
- Fractures of the distal radius account for up to 15% of all extremity fractures. Volar plating has become more popular, as it allows locking plate technology to be applied. Traditionally, access to the volar radius has been achieved through the approach of Henry using the interval between flexor car
- PMID 26535483
Japanese Journal
- Upper extremity muscle activation during drinking from a glass in subjects with chronic stroke
- , ,
- Journal of Physical Therapy Science 27(3), 701-703, 2015
- … Participants used relatively higher levels of %MVIC in the anterior deltoid, flexor muscles, brachioradialis, and infraspinatus on the stoke-affected side. …
- NAID 130005061615
- Comparison of Muscle Activation while Performing Tasks Similar to Activities of Daily Livings with and without a Cock-up Splint
- , ,
- Journal of Physical Therapy Science 25(10), 1247-1249, 2013
- … The activation of the biceps brachii, the triceps brachii, and the brachioradialis with and without the cock-up splint was measured using a BTS FreeEMG 300 wireless electromyography system (BTS, Inc., Milan, Italy). … [Results] The activation of the biceps brachii and the brachioradialis was significantly higher while performing the simulated feeding task with the cock-up splint than without the splint. …
- NAID 130004834711
- The Effects of Elbow Joint Angle Change on the Elbow Flexor Muscle Activation in Pulley with Weight Exercise
- , , , , ,
- Journal of Physical Therapy Science 25(9), 1133-1136, 2013
- … The muscle activities of the biceps brachii and brachioradialis showed angle-related changes in the order of 55°, which showed the biggest value, followed by 70° and 90°. …
- NAID 130004432090
Related Links
- A tutorial on the attachments, actions, and nerve supply of the brachioradialis muscle, using interactive animations and diagrams. ... :: Brachioradialis Muscle ::
- Other Names Forearm (Upper-outer) Supinator longus (out dated) Heads Brachioradialis Movement Elbow Flexion Attachments Origin Humerus Lateral Condyle Insertion Radius (Lateral Distal) Styloid Process
Related Pictures
★リンクテーブル★
[★]
- 英
- brachioradialis muscle(N), brachioradialis
- ラ
- musculus brachioradialis
- 関
- 上肢の筋
- 図：N.429(前腕前面の浅層) N.430(前腕前面の中間) N.431(前腕前面の深層)
- 遠位端から始まり遠位端に停止する唯一の筋 (K.55)
神経
機能 (K.55に詳しい)
カテゴリー
上腕の筋:＞上腕の筋
[★]
腕橈骨筋
- 関
- brachioradialis、musculus brachioradialis
[★]
腕橈骨筋
- 関
- brachioradial muscle、brachioradialis