Anatomic and Biomechanical Study of Posterior Cervical Spine Plate Arthrodesis: An Evaluation of Two Different Techniques of Screw Placement.Montesano, Pasquale X.; Jauch, Edward; Jonsson, Halldor Jr.Journal of Spinal Disorders: September 1992 Original Article: PDF Only Abstract Summary: This study compares two techniques of screw placement for posterior plate arthrodesis of the cervical spine: one in which the screw is placed in a parasagittal plane, and the other in which the screw is directed anteriorly, laterally, and cranially. (C) Lippincott-Raven Publishers.