Technique of removal of disc between fifth and sixth cervical vertebrae. A, Midline incision extending from spinous process of C5 to that of C6. B, Paraspinal muscles have been dissected from laminae and retracted laterally. Hole is to be drilled with high-speed burr (see text). C, Ligamentum flavum is being dissected. D, Defect measuring about 1.3 cm has been made (see text) to expose nerve root and lateral aspect of dura. E, Nerve root has been separated from nucleus and retracted superiorly to expose herniated disc. F, Longitudinal ligament has been incised, and loose fragment of nucleus is being removed. SEE TECHNIQUE 38.4.