Click on the structure to specify the target of your label
 |
 |
 |
||
 |
 |
 |
 |
 |
01 |  |
Pronator quadratus
Other Terms:
Musculus pronator quadratus,
Muscle carré pronateur
Muscle parts
None
Latin name
Musculus pronator quadratus
Latin muscle parts
None
Group
Antebrachial muscle – anterior compartment – deep group
Etymology
The muscle’s name in English is the square muscle that turns the hand palm downward. The word pronator comes from the Latin pronus, which means “inclined forward or lying face downward.” The word quadratus comes from the Latin quadrus for “square.”
Origin
Oblique ridge on anterior surface of the distal ulna
Insertion
Distal quarter of the radius on the anterolateral surface and into the area just above the ulnar notch of the radius
Action
Major pronator (always active in pronation); stabilizes separation of the radius and ulna when hand is forced into wrist joint
Nerve supply
Median nerve (C7 and C8)
Blood supply
Radial artery; anterior interosseous artery, and small recurrent branches from the deep palmar arch.
Latin
Musculus pronator quadratus
French
Muscle carré pronateur
