What does flexion involve?

Flexion refers to the movement that decreases the angle between two body parts, effectively bending them at a joint. For instance, when you bend your elbow to bring your hand closer to your shoulder, you are performing flexion. This action contrasts with extension, which increases the angle between body parts, resulting in straightening the joint. Therefore, the definition of flexion aligns precisely with the action of bending a body part. Understanding the mechanics of flexion is crucial in various settings, such as physical therapy or anatomy, where body movement and joint function are key components of care or assessment.