Knowing the different planes of motion – Sagittal, transverse and frontal, is crucial in laying the foundation for understanding human movement skills. In each of these planes, several movements around the joint occur, mainly the lateral, longitudinal and vertical axes.
Firstly, separating the body into left and right halves with an imaginary line, determines the sagittal plane. Backward and forward movement, parallel to that line happens here.
Similarly, separating the body into front and back halves, determines the frontal plane. Lateral movement, parallel to the line happens here.
Lastly, the transverse plane is determined by splitting the body into the upper and lower trunk. All movement parallel to the waistline, classified as rotational movement, occurs here.