How is lateral (external) rotation defined?

Lateral (external) rotation is defined as movement around an axis that takes the body part away from the center of the body. In the case of external rotation, it specifically refers to the rotation of a limb or a joint that allows for the outer aspect of the structure to turn away from the midline.

For example, in the shoulder joint, when the arm is raised to the side and then rotated outward, this is considered lateral or external rotation. This movement is essential in various physical activities and sports, as it allows for a greater range of motion and the ability to perform movements that require the limb to be positioned in different orientations.

Understanding the mechanics of lateral rotation aids in proper exercise programming and injury prevention, ensuring that individuals maintain a balanced approach to strength and flexibility training. This is especially important for maintaining shoulder health and function, where external rotation plays a crucial role in stabilizing the joint.