The DXD software correlates with the AMA Guidelines 4th Edition, 5th Edition (p. 378- 79) and the 6th Edition (p. 578-79). The 6th Edition requires that objective evidence be utilized when evaluating permanent impairment. The DXD software utilizes X-ray image overlays technology and qualifies as “Evidence Based Objective Impairment Rating”. This software is designed to detect and evaluate ratable impairment established by the AMA Guidelines. Translation motion is measured by determining the anterior/posterior motion greater than 3.5 mm in the cervical spine which is quantified on the flexion and/or extension radiographs. In addition, angular motion is utilized which can’t be greater than 11 degrees in the cervical spine which can be quantified on the flexion radiograph.