Discogram

Discogram

The indications for getting a discogram prior to a lumbar fusion surgery are extremely variable amongst spine surgeons. Ordering the procedure depends on access to a skilled discographer. A discogram is basically a very subjective test, and if there are no experienced discographers available, then the spine surgeon may forego the test since a poorly done discogram does not yield any useful information. It should be understood that the discogram is less about the anatomy of the disc (what the disc looks like) and more about its physiology (determining if the disc is painful). It is well known to discographers that a really abnormal looking disc may not be painful and a minimally disrupted disc may be associated with severe pain. It is impossible to definitively diagnose a painful disc without performing a discogram.

The lumbar discogram, if performed properly, is designed to induce pain in a sensitive disc. A spinal fusion procedure that is designed to obliterate an internally disrupted, painful disc (pain generator) would not be the procedure of choice if pressurization of the disc didn’t reproduce the patient’s clinical discomfort. The spine surgeon needs to be absolutely sure that the level or levels being fused are responsible for the patient’s pain.