Dynamic Changes of the Spinal Canal in Patients With Cervical Spondylosis at Flexion and Extension Using Magnetic Resonance Imaging

Abstract

Magnetic resonance imaging identified a significant percentage of increased spinal stenosis at flexion and, especially, at extension, which was not observed at neutral position (0 degree). Flexion and extension MR imaging demonstrates additional information using a noninvasive technique concerning the dynamic factors in the pathogenesis of cervical spondylotic myelopathy.