Awaq,
That is an interesting study that you posted about, but leaves many, many questions unanswered.
It's a known fact that many, many people walk around with bulging discs and have no symptoms.
If those people where given a discogram, they may or may not have positive results from having a discogram done.
On the other hand, when someone with symptoms of disc problems present themselves at a spine surgeon's office, it is the job of the spine surgeon to find out what is causing the pain the patient has and then give a diagnosis and present a treatment plan to ease the patient's pain and get them back to "living a life again."
Many times and MRI on a patient that exhibits and describes spinal pain matches the images on MRI pics. Other times, it is not as clear cut as that, and further tests are needed to attempt to determine where or which discs are really causing the pain.
When conservative treatments fail to provide pain relief for the patient, epidural injections or nerve blocks do not give a clear enough answer to which disc is causing the pain, but both appear to be or are bulging, then it is necessary to do further tests in an attempt to answer those questions.
The usual procedure is to do several discs during a discogram not just one disc.
One of the problems I do have with the study you posted is this.
When I discogram is done on a patient that really is experiencing spine pain from bulging discs, a positive result is not pain. The positive result is recreating the patient's normal pain or increasing that pain. If the dye does not recreate the same pain as the patient experiences, then the test result on that disc is negative.
Even though the disc may look degenerated on an MRI scan, it is in fact not the source of the patient’s pain.
Since the patient is awake during a discogram and has to describe an react to whatever pain is felt, a doctor is not going to be able to confirm his/her own beliefs that a particular disc is the problem, when in fact that patient will tell the doctor if the same pain was recreated or increased on a particular disc.
I personally find your comments as to why a doctor would order a discogram offensive and an insult to doctors.
Doctors are not perfect, nor are tests done to determine a patient's cause of pain.
You obviously have a hidden agenda in your many negative posts about doctors and spine surgeons.
I don't know why you post the way you do, but believe me, there are thousands and thousands of good spine surgeons.
To continue to post, as you do, is not helpful to the many people that post here asking for help and advise on their spine problems.
Fran