szupinációs

Szupináció refers to the outward rotation of the forearm, which turns the palm upwards. This movement is also known as supination. When the forearm is supinated, the radius and ulna bones are parallel to each other. This is the anatomical position of the forearm, where the palm faces forward or upward.

The primary muscles responsible for supination are the supinator and the biceps brachii. The supinator muscle is located in the upper forearm and directly rotates the radius. The biceps brachii, a larger muscle in the upper arm, also contributes significantly to supination, especially when the elbow is flexed.

Supination is a crucial movement for many everyday activities, such as holding a cup, turning a doorknob, or using tools. It is also vital in various sports, including tennis, baseball, and weightlifting, where precise control of forearm rotation is necessary.

In contrast, pronation is the opposite movement, which turns the palm downwards or backwards. The forearm returns to a neutral or pronated position from supination through a relaxation of the supinating muscles and the action of pronator muscles. Understanding supination and pronation is important in fields like anatomy, kinesiology, and physical therapy for diagnosing and treating injuries related to the forearm and elbow.