What is pronator quadratus?

Pronator Quadratus is the deep muscles of the forearm, which is located on the palms of the arm above the wrist. Responsible for pronation or turning the forearm of the palms, acting on the Radioul joint, articulation between radial and ulna bone just above the wrist in the lower arm. For this event, this muscle is important for missile sports players such as tennis or ping-pong, as well as for swimmers who use it to pronounce forearms during a freestyle stroke. As such, these populations may be exposed to an increased risk of pronator quadratus overuse of injury such as tendonitis. It runs perpendicular to the length of the arm rather than the parallel as in most muscles, its fibers pass through the forearms laterally to insert along the radius, the bones closest to the thumb side of the arm. The forearm muscles, IT are the only one with one end attached to the ulna only and the other end attached to the radius only.

along with pronator teres, which is located closer toThe proximal or upper end of the forearm, Pronator Quadratus is one of the only two muscles responsible for the pronation. From an anatomical point of view, it is a position in which weapons on the sides with palms pointing forward. The pronation is an act of turning the palms back without the accompanying rotation in the shoulder joint. From the anatomical position, the hands would simply turn to the opposite direction.

This specific movement of the forearms initiated by the pronator Quadratus and the pronator teres includes a change in the position of the radius and ulna in relation to each other. In the anatomical position, the ulna is media or closer to the middle line of the body and the radius is side or further from the middle line and is parallel. When it is pronounce, the contraction of the pronator muscle Kvadratus pulls out the distal or lower end of the radius of the front and media to the uln. In other words, as the forearms rotate the palm down, the bones of the radius intersect in front of the ulna bone towards the middle line of the body, so both form "X." When the muscle extends back to its neutral position, so toThey return to their neutral, parallel positions.