Modeling of the Sagittal Cervical Spine as a Method to Discriminate Hypolordosis : Results of Elliptical and Circular Modeling in 72 Asymptomatic Subjects, 52 Acute Neck Pain Subjects, and 70 Chronic Neck Pain Subjects

Study Design.Computer analysis of digitized vertebral body corners on lateral cervical radiographs.Objectives.Using elliptical and circular modeling, the geometric shape of the path of the posterior bodies of C2–C7 was sought in normal, acute pain, and chronic pain subjects. To determine the least s