Ellbogenextension

Ellbogenextension refers to the movement of straightening the arm at the elbow joint. This action involves the extension of the forearm away from the upper arm. The primary muscles responsible for active elbow extension are the triceps brachii, located on the posterior side of the upper arm. When the triceps brachii contract, they pull on the olecranon process of the ulna, causing the elbow joint to open and the arm to straighten.

Passive elbow extension can occur without active muscle contraction, for example, when the arm is allowed to hang freely due to gravity or when external forces are applied. The range of motion for elbow extension is typically considered to be 0 degrees, meaning the arm can be fully straightened. However, some individuals may possess a slightly hyperextended elbow, allowing for a few degrees of movement beyond a straight line.

Injury or conditions affecting the triceps muscle, the olecranon, or the elbow joint itself can limit or impair elbow extension. Rehabilitation exercises often focus on restoring full and controlled elbow extension through strengthening the triceps and improving joint mobility. Understanding ellbogenextension is fundamental in the study of human anatomy, biomechanics, and physical therapy.