Final answer:
Medial (internal) rotation is the rotational movement that brings the anterior surface of a limb toward the midline of the body, specifically at ball-and-socket joints such as the shoulder and hip.
Step-by-step explanation:
Rotating the front of a limb toward the midline is called medial (internal) rotation. This is a type of rotational movement seen in the ball-and-socket joints of the shoulder and hip, such as with the humerus and femur.
During medial rotation, the anterior surface of the limb is brought closer to the midline of the body. It is important to differentiate between medial rotation and lateral (external) rotation, which is the movement of a limb that causes the anterior surface to move away from the midline.