Demystifying Bulging and Herniated Discs
Updated: Sep 13, 2021
You’ve probably heard the terms bulging disc or herniated disc at some point, whether it involved you or someone you know. While those words can strike fear in a lot of people, it’s important to understand what they really mean, and remove the scary presumptions we have about them.
Within the spine you have numerous structures, but the two I am focusing on are the vertebrae (the individual bones of the spine), and the discs (the cartilage ‘cushion’ in between each of those vertebrae). These discs act as shock absorbers that allow your spine to move in different directions and deal with regular impact without damaging the other spinal structures.
So, what is a bulging disc and what is a herniated disc?
A bulging disc occurs when the entire disc “bulges” out of its normal space. Think of it like this; if you were to put a chunk of playdough between two plates and squeeze them together evenly, the playdough would act as a cushion, with the full weight being distributed throughout the entirety of it. But if you squeeze those plates together on one side only, you’d see a bulge, out of the side that has the largest opening. This is essentially what’s happening with a bulging disc. Most of us have posture and movement habits that put an uneven pressure on those discs on a regular basis; that’s perfectly normal. And while that itself is not quite enough to cause any major issues, over time this can create weakness in ligaments and other stabilising structures, allowing more of that disc to protrude.
A herniated disc is a bit different. For simplicity’s sake, let’s compare a disc to a jam donut. You’ve got this tough outside portion that holds in the filling. That’s pretty much how your disc is made; a tough cartilage “donut” filled with a softer gelatinous component. That tough outside keeps the jam from leaking out. Now imagine that with wear and tear over time and a lot of uneven pressure applied, the outer layer starts to stretch and thin, allowing some of that jam to push out. This is essentially what’s happening in a herniated disc. The outer portion thins and allows part of the inner structure of the disc to push out of the normal disc space.
While this may all sound a little scary, studies have shown that many people with bulging and herniated discs have absolutely no pain associated with them. The discs themselves have no nerve endings where you could even tell there’s a “problem”. The only time you’d even recognise that there may be something going on would be if you started to experience pain, and that only happens when the disc puts pressure on a nerve. And while that’s absolutely possible, it’s just as possible to live a normal pain-free existence with a bulging or herniated disc for years.
In fact, these bulging and herniated discs tend to happen as a completely normal part of the aging process. While some bulging and herniated discs can be caused by poor posture and movement patterns or injury to the spine, most cases are simply something that happens as we get older. Again, this doesn’t necessarily translate into a painful or even noticeable condition, but if it does, patients can experience pain, numbness, and tingling within the low back, hip, and down the leg as well as a loss of range of motion. While not the only way to feel this, one of the most common and obvious is if you’ve ever “put your back out”. If you have ever experienced this, you have likely irritated one of these disc issues you may not have even known you had. That sudden inability to stand up straight after bending forward along with pain or tingling, are classic signs of a sudden nerve compression due to a bulging or herniated disc. Rest and extension exercises are some of the best quick fixes to get you standing up again at least, but it’s still important to seek out treatment.
If you’re experiencing these symptoms, whether it's that sudden unmistakable type, or the slow, only occasional bout of pain, it’s important to seek proper imaging and testing from your doctor and/or physical therapist to get you on the right track for therapy. This is not something to put off. The sooner you can manage this, the better the results of treatment.
The key to treatment is to take the pressure off the nerve, since that’s what’s causing the pain. To do this, physical therapy is often recommended to not only learn movements and positioning patterns to take that pressure off ASAP, but also to teach you exercises to strengthen your low back safely to prevent recurrences, as well as new ways of moving that can prevent that nerve pressure from being applied by the disc again.
Remember, while these terms may sound like a dreadful diagnosis, many people never experience pain, or recover from short periods of pain with the right treatment protocols. Others, with more severe symptoms, require more invasive treatments like nerve blocks and surgery. Whatever you’re feeling though, it is important to contact your GP or Physio as soon as possible to correct the issue and prevent any worsening. And of course, massage therapy is here to decrease the associated inflammation, keep your joints mobile and happy, and ease any other pain that comes from these conditions.