We have been discussing how to indicate the sections of the body depicted in 1a) below.

The drawing shows the body divided into four areas: the right upper, left upper, right lower, and left lower quadrants.

In the drawing, the vertical dashed line that divides the right and left sides of the body passes through the head, which makes it look like only the right side of the head moves in right upper quadrant movements, and only the left side moves in left upper quadrant movements.

However, since this isn’t possible, the whole head is included in a movement of either upper quadrant. Similarly, a movement of a lower quadrant includes the whole pelvis.

Presently there are no established indications for such body quadrants. Using the sign for the body-as-a-whole (1b), we have devised three sets of symbols for them (2a-n, 3a-k, 4a-k).