COUPLED MOTION IN THE SPINE
"LATERAL FLEXION OF THE SPINE
IS ALWAYS ACCOMPANIED BY SOME ROTATION."
RASCH PJ, BURKE RK. KINESIOLOGY AND APPLIED ANATOMY. 6 ed. Philadelphia: Lea and Febier;1978:226.
A ROD BENT IN ONE DIRECTION WILL ROTATE WHEN BENT SIMULTANEOUSLY AT A RIGHT ANGLE.
LEHMKUHL AND SMITH, P.372
MOST AUTHORS AGREE ON A DESCRIPTION OF COUPLED MOTION IN THE CERVICAL SPINE BETWEEN C2 AND C7. OTHERWISE, DESCRIPTIONS OF COUPLED MOTION VARY
Working bibliography of spinal anatomy and function that relates to coupled motion