Disc herniation of cervical spine.

The so-called soft disc herniation (the extruded or sequestered type) of cervical spine is relatively rare. For such a diagnosis precise neurological examination, myelography and discography are employed, but among them the specific reproduction of the patient's symptoms and the radiographic appearance of the disc by discography are especially important. Our 8 cases of soft disc herniation have been classified into central-paracentral and posterolateral types by the direction of extruded material from discographic pictures. Every type shows the complications of root pain. Discussion relates to the pain that accompanies this soft disc herniation. In half of the cases extruded disc material has been removed but others have been improved by conservative treatment.