In the performance of a forcible entry with a sledge hammer, what anatomical plane does the motion occur?

The correct answer indicates that the motion of performing a forcible entry with a sledgehammer primarily occurs in the frontal plane. The frontal plane divides the body into anterior (front) and posterior (back) sections. During the action of swinging a sledgehammer side to side, as one might while breaking through a door or barrier, the movement involves abduction and adduction of the limbs, which are movements that happen in the frontal plane.

When considering the anatomical planes, the sagittal plane is associated with forward and backward movements; the transverse plane deals with rotational movements, and the coronal plane is often used interchangeably with the frontal plane. However, it is the frontal plane that is most accurate for the lateral movements involved in this scenario. Therefore, the performance of a forcible entry with a sledgehammer indeed emphasizes motion in the frontal plane due to the side-to-side nature of the sledgehammer swing.