方形回内筋
WordNet
- a muscle that produces or assists in pronation
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/11/06 02:48:53」(JST)
[Wiki en表示]
| Pronator quadratus muscle |
|
Anterior view of left forearm. Deep muscles. (Pronator quadratus visible at bottom-center right.)
|
| Details |
| Latin |
Musculus pronator quadratus |
| Origin |
medial, anterior surface of the ulna |
| Insertion |
lateral, anterior surface of the radius |
|
Artery
|
anterior interosseous artery |
|
Nerve
|
median nerve (anterior interosseous nerve) |
| Actions |
pronates the forearm |
| Antagonist |
Supinator muscle |
| Identifiers |
| Gray's |
p.449 |
Dorlands
/Elsevier |
m_22/12550251 |
| TA |
A04.6.02.038 |
| FMA |
38453 |
| Anatomical terms of muscle |
Pronator quadratus is a square shaped muscle on the distal forearm that acts to pronate (turn so the palm faces downwards) the hand.
As it is on the anterior side of the arm, it is innervated by a branch of the median nerve, the anterior interosseous nerve (roots C8 and T1 with T1 being primary). Arterial blood comes via the interosseous artery.
Contents
- 1 Structure
- 2 Function
- 3 Additional Images
- 4 External links
Structure
Its fibers run perpendicular to the direction of the arm, running from the most distal quarter of the anterior ulna to the distal quarter of the anterior radius. It is the only muscle that attaches only to the ulna at one end and the radius at the end.
Function
When pronator quadratus contracts, it pulls the lateral side of the radius towards the ulna, thus pronating the hand. Its deep fibers serve to keep the two bones in the forearm bound together.
Additional Images
-
Pronator quadratus muscle
-
Pronator quadratus muscle
-
Pronator quadratus muscle
-
Pronator quadratus muscle
External links
- 114294862 at GPnotebook
- Illustration: upper-body/pronator-quadratus from The Department of Radiology at the University of Washington
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Muscles of the human arms
|
|
| Shoulder |
- deltoid
- rotator cuff
- supraspinatus
- infraspinatus
- teres minor
- subscapularis
- teres major
|
|
| fascia: |
- deltoid fascia
- supraspinous fascia
- infraspinous fascia
|
|
|
Arm
(compartments) |
| anterior |
- coracobrachialis
- biceps
- brachialis
|
|
| posterior |
- triceps brachii
- anconeus
- articularis cubiti
|
|
| fascia |
- axillary sheath
- axillary fascia
- brachial fascia
- intermuscular septa
|
|
| other |
- spaces
- quadrangular space
- triangular space
- triangular interval
|
|
|
| Forearm |
| anterior |
| superficial: |
- pronator teres
- palmaris longus
- flexor carpi radialis
- flexor carpi ulnaris
- flexor digitorum superficialis
|
|
| deep: |
- pronator quadratus
- flexor digitorum profundus
- flexor pollicis longus
|
|
|
| posterior |
| 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
|
|
|
| fascia |
- bicipital aponeurosis
- common tendons
- antebrachial fascia
|
|
| other |
|
|
|
| Hand |
| lateral volar |
- thenar
- opponens pollicis
- flexor pollicis brevis
- abductor pollicis brevis
- adductor pollicis
|
|
| medial volar |
- hypothenar
- opponens digiti minimi
- flexor digiti minimi brevis
- abductor digiti minimi
- palmaris brevis
|
|
| intermediate |
|
|
| fascia |
| posterior: |
- extensor retinaculum
- extensor expansion
|
|
| anterior: |
- flexor retinaculum
- palmar aponeurosis
|
|
|
|
|
Index of muscle
|
|
| Description |
- Anatomy
- head
- neck
- arms
- chest and back
- diaphragm
- abdomen
- genital area
- legs
- Muscle tissue
- Physiology
|
|
| Disease |
- Myopathy
- Soft tissue
- Connective tissue
- Congenital
- abdomen
- muscular dystrophy
- Neoplasms and cancer
- Injury
- Symptoms and signs
|
|
| Treatment |
- Procedures
- Drugs
- anti-inflammatory
- muscle relaxants
|
|
|
UpToDate Contents
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English Journal
- Distal radioulnar joint: functional anatomy, including pathomechanics.
- Haugstvedt JR1, Langer MF2, Berger RA3.
- The Journal of hand surgery, European volume.J Hand Surg Eur Vol.2017 May;42(4):338-345. doi: 10.1177/1753193417693170. Epub 2017 Feb 1.
- PMID 28399788
- Treatment of Advanced Kienböck Disease With a Vascularized Radial Bone Flap Wrapped in the Pronator Quadratus.
- Lee SK1, Kim KJ, Shin HS, Choy WS.
- Annals of plastic surgery.Ann Plast Surg.2017 Mar;78(3):274-279. doi: 10.1097/SAP.0000000000000937.
- PMID 28182595
- Intramuscular nerve distribution patterns of anterior forearm muscles in children: a guide for botulinum toxin injection.
- Yang F1, Zhang X2, Xie X3, Yang S1, Xu Y4, Xie P1.
- American journal of translational research.Am J Transl Res.2016 Dec 15;8(12):5485-5493. eCollection 2016.
- PMID 28078019
Japanese Journal
- ジャイアントパンダにおける前腕筋群の機能形態学的検討(解剖学)
- The journal of veterinary medical science 65(8), 839-843, 2003-08-25
- NAID 110003886269
Related Links
- Pronator quadratus muscle (Musculus pronator quadratus) Pronator quadratus is a quadrangular, thin, short and flat muscle lying within the anterior compartment of forearm. It is part of the deep group of forearm flexors, together with flexor digitorum profundus and flexor pollicis longus.
- ・方形回内筋(musculus pronator quadratus) ・前腕伸筋群 前腕伸筋群は前腕部外側に位置する筋肉群で、「手首を伸展させる」働きがあり、以下の筋肉で構成されています。 手首を巻き込み腕を引き寄せる動作に連動するため、腕相撲 ...
- A04_6_02_038 方形回内筋Pronator quadratus muscle(Musculus pronator quadratus) 方形回内筋【ほうけいかいないきん】 o: Distal one-fourth of the ...
★リンクテーブル★
[★]
- 英
- pronator quadratus (K) PQ, pronator quadratus muscle
- ラ
- musculus pronator quadratus
- 関
- 回外筋、円回内筋、方形回内筋、上肢の筋
起始
停止
機能
カテゴリ
前腕の回旋筋＞:前腕の回旋筋
Henry Gray (1825-1861). Anatomy of the Human Body. 1918.
Henry Gray (1825-1861). Anatomy of the Human Body. 1918.