Pierce was the first corrective chiropractic system.  That is, not only did the Pierce system strive to locate and remove the subluxation, but it also was aimed at improving overall spinal shape and function.  It was developed by Vernon Pierce, D.C., Sr and consists of a biomechanical analysis of spine kinematics (or spinal motion).  Its main goal is to reduce or eliminate scoliosis and restore optimal curves to the spine (front to back).