armbågsrörelser

Armbågsrörelser refer to the various ways the elbow joint can move. The primary movements are flexion and extension. Flexion is the bending of the elbow, decreasing the angle between the upper arm and the forearm, bringing the hand closer to the shoulder. Extension is the straightening of the elbow, increasing the angle between the upper arm and the forearm, moving the hand away from the shoulder.

In addition to flexion and extension, the elbow also facilitates pronation and supination of the forearm. Pronation is the inward rotation of the forearm, causing the palm to face downwards or backwards. Supination is the outward rotation of the forearm, causing the palm to face upwards or forwards. These rotational movements are crucial for many daily activities, such as turning a doorknob or holding a tool.

The elbow joint is a complex hinge joint formed by the humerus (upper arm bone), the ulna, and the radius (forearm bones). Its structure allows for these specific movements. The muscles surrounding the elbow, such as the biceps and triceps, are responsible for generating the force required for flexion and extension. Muscles in the forearm and upper arm also control pronation and supination. Understanding these armbågsrörelser is important in fields like physical therapy, sports science, and ergonomics.