key term - Flexion

Definition

Flexion is the action of bending a joint or limb in the body which decreases the angle between the bones of the limb at the joint. It is a fundamental movement in daily activities and exercises, contrasting with extension which increases the angle.

Related terms

Extension:

Extension is an anatomical movement that increases the angle between parts at a joint, opposite to flexion.

Abduction:

Abduction is moving a limb or other part away from the midline of the body or from another part.

Adduction:

Adduction refers to moving a limb or other part toward the midline of the body or towards another part