Anterior Approach (Anterior Floating Method) and Its Surgical Results for Cervical Myelopathy Caused by Ossification of the Posterior Longitudinal Ligament

As ossification of the posterior longitudinal ligament (OPLL) of the cervical spine forces the anterior wall of the vertebral canal posteriorly to compress the spinal cord, thus causing myelopathy, simple decompression by posterior laminectomy does not always produce the expected improvement.