Spinal Osteoarthritis: What It Actually Means for Your Back (And Why It's Not as Scary as It Sounds)

"You've got arthritis in your spine." For a lot of patients, that sentence lands like a diagnosis of inevitable decline — something that only happens to "old" people, something that only gets worse. It's one of the more anxiety-inducing phrases to see on a scan report, and honestly, it doesn't deserve the reputation. Here's what's actually going on when we say spinal osteoarthritis, and why the word is scarier than the reality.

What Spinal Osteoarthritis Actually Is

Every level of your spine has a pair of small joints at the back, called facet joints, which guide and limit how your vertebrae move against each other. Like any joint in your body — a knee, a hip, a knuckle — the cartilage lining these joints can gradually wear down over years of use. That wear and tear is osteoarthritis. It can lead to thinning cartilage, a bit of extra bone growth around the joint edges (often called bone spurs), and sometimes some mild inflammation in the area.

It's the same basic process as osteoarthritis anywhere else in the body — it's just happening in the small joints of your spine instead of your knee or hip.

Why the Word Sounds Scarier Than It Is

Here's the part that gets lost in translation: spinal osteoarthritis is extremely common, and it doesn't automatically mean pain. Studies scanning the spines of people with zero back pain regularly find facet joint changes, disc wear, and other "arthritic" findings — sometimes in a majority of people over 40. Imaging shows structure, not symptoms. A scan can't tell you how much something hurts; it can only show what's changed over time.

This is why two people can have nearly identical scan results — one in daily pain, the other feeling completely fine. The finding on the report is a description of your spine's history, not a prediction of your future.

So What Actually Causes the Pain?

When spinal osteoarthritis does cause symptoms, it's usually because of a few specific things: inflammation flaring up around a worn joint, bone spurs narrowing the space where a nerve exits the spine, or stiffness that changes how you move and compensates through other areas. It's rarely the "wear" itself that hurts — it's what that wear is doing to the space and structures around it.

The Disc Connection Nobody Mentions

Facet joint arthritis rarely shows up in isolation, and this is the piece that often gets missed. Your spinal discs and facet joints work as a shared load-sharing system at every level of your spine. When a disc loses height or hydration — which happens gradually with age or repeated compression — more of your body's weight gets redirected onto the facet joints sitting right beside it. That extra load speeds up the wear on those joints.

In other words, disc changes and facet joint arthritis often feed into each other. Treating one in isolation, without considering the other, frequently misses part of the picture.

What Actually Helps

Movement is one of the best things for arthritic joints, spinal or otherwise — it keeps cartilage nourished and prevents the stiffness that makes symptoms worse. Strengthening the muscles that support your spine reduces how much load those joints carry day to day. And because discs and facet joints share load, addressing disc compression can meaningfully ease pressure on the joints beside it too.

This is where Spinal Decompression Therapy fits in well for patients with facet joint changes. By gently creating space between vertebrae, decompression doesn't just relieve pressure on a compressed disc — it also takes load off the surrounding facet joints, addressing both parts of a system that are, more often than not, contributing to the same problem together.

The Takeaway

Seeing "osteoarthritis" on a scan report can feel alarming, but on its own, it's rarely the full story. It's a common, largely age-related finding that doesn't reliably predict pain, and when it does contribute to symptoms, it's usually tied up with what's happening in the disc right beside it. Understanding that connection matters more than the word itself.

If you're in Sydney CBD and a scan has left you with more questions than answers, let's sit down and properly explain what your results actually mean for you.