Rotation is the primary motion that occurs at the atlantoaxial joint (C1-C2). Normal rotation at this joint is ~38 degrees to either side. To assess for C1-C2 dysfunction to the right (for example), fully sidebend the head to the left, then fully rotate to the right. The sidebending component locks out the lower cervical segments and prevents these segments from rotating.
-Note: when novices are practicing this manipulation, a loss of sidebending is generally the reason the manipulation is not successful. Make sure to maintain the sidebending component while rotating the head.
-Practice tip: to improve speed with cervical manipulations, practice by using a pillow.
*we know the video is titled CT Supine, we are changing it.*