Cervical Disc Contrast Radiography and Block
Cervical disc contrast radiography is a method by which contrast agent is injected into the cervical disc, under X-ray fluoroscopy-guided method, in order to obtain information about the discs and surrounding area. Intervertebral disc and nucleus pulposus morphology can be determined by radiography; this information cannot be obtained from preoperative magnetic resonance imaging, due to leakage of the contrast agent. Information regarding the degrees of degeneration and hardness of the intervertebral disc, in terms of resistance to the injection, can also be determined, which is useful for considering indications for percutaneous discectomy. The presence/absence of induced pain when the contrast agent is injected can be used for diagnosis and treatment, by comparison with clinical symptoms. Simultaneous injection of local anesthetic and steroids may induce therapeutic effects.