Multilevel degenerative changes is a phrase radiologists use on MRI or CT reports to describe wear-and-tear findings at more than one level of the spine. Each “level” is a segment made up of two vertebrae and the disc between them, so “multilevel” means the wear shows up at two or more of those segments. The word “degenerative” sounds alarming, but the changes it refers to are so common in adults that a large systematic review found disc degeneration on imaging in nearly all people by age 80, including those with no back pain at all. Understanding what the phrase actually covers, and what it does not tell you, can save a lot of unnecessary worry.
What a Radiologist Sees on the Images
When a radiologist writes “multilevel degenerative changes,” they are summarizing a collection of structural findings rather than diagnosing a disease. The specific findings vary from person to person but tend to fall into a few categories. Disc degeneration is the most frequently noted: the rubbery pads between vertebrae lose water content over time, which makes them appear darker on MRI and thinner on X-ray. Disc bulging, where the outer wall of a disc extends beyond the edge of the vertebra, is another common finding. Osteophytes, or bone spurs, grow along the edges of vertebral bodies and facet joints as the body attempts to stabilize segments that have become less rigid. The term spondylosis is sometimes used interchangeably with these bony changes and refers broadly to the buildup of osteophytes along the endplates and facet joints.1PubMed Central. ABCs of the degenerative spine
Reports may also mention facet joint arthropathy, which is arthritis in the small paired joints at the back of each vertebra, or thickening of the ligamentum flavum, a band of tissue that runs along the back wall of the spinal canal. When the report says “multilevel,” it is telling you that some combination of these findings appears at more than one spinal segment. It is not, by itself, telling you that surgery is needed or that you should expect worsening pain.
How Common These Changes Are in People Without Pain
One of the most important things to understand about a multilevel degenerative changes finding is how ordinary it is. A systematic review pooling data from 33 studies and over 3,100 people with no symptoms found that disc degeneration was present in about 37% of 20-year-olds and climbed to 96% of 80-year-olds. Disc bulging followed a similar curve, appearing in roughly 30% of 20-year-olds and 84% of 80-year-olds.2PubMed Central. Systematic literature review of imaging features of spinal degeneration in asymptomatic populations That means if you are over 60, there is a very high probability that an MRI of your spine would show degenerative changes at multiple levels whether or not you have any complaints.
A separate review of aging-spine imaging confirmed that disc degeneration, bulging, and facet joint arthropathy have been documented in close to 90% of asymptomatic people over 60, and that nearly everyone over 40 shows osteophytes along the front and sides of their vertebrae.3Polish Journal of Radiology. Imaging features of the aging spine These numbers make it clear that degenerative changes are part of normal aging, much like wrinkles on skin or gray hair. Seeing the phrase on your report does not automatically mean something has gone wrong.
The Disc Itself and Why It Wears Down
Intervertebral discs are built to absorb shock, but they are also among the first structures in the body to show age-related change. The disc has two main parts: a tough outer ring and a gel-like center. Over decades, the cells inside the disc produce less of the material that keeps the center hydrated and springy. Oxidative stress, accumulated cellular damage, and a decline in the disc’s already limited blood supply all contribute to this process.4PubMed Central. Molecular Mechanisms of Intervertebral Disc Degeneration As the disc dries out and flattens, the vertebrae above and below move closer together, which changes the load distribution across the entire segment. The bone spurs that show up on imaging are essentially the body’s attempt to spread that load over a wider area and re-stabilize the segment.
Because the spine works as a chain, changes at one level can shift how neighboring levels bear weight. That cascading effect is one reason why degenerative findings tend to appear at multiple levels rather than just one, especially in the lumbar (lower back) and cervical (neck) regions, which carry the most mechanical stress during everyday activities.
Facet Joints and Ligament Thickening
Discs get most of the attention, but the facet joints and the ligamentum flavum play equally important roles when the report says “degenerative changes.” Facet joints guide the motion of each spinal segment. When they develop arthritis, bony overgrowth can encroach on the spinal canal or the openings where nerves exit. Thickening of the ligamentum flavum compounds the problem. Research has identified ligamentum flavum thickening and bony growth of the facet joints as major contributors to canal narrowing in lumbar spinal stenosis.5PubMed Central. Analysis of the Relationship between Ligamentum Flavum Thickening and Lumbar Segmental Instability, Disc Degeneration, and Facet Joint Osteoarthritis in Lumbar Spinal Stenosis
Interestingly, there is growing evidence that when the spinal canal narrows enough to produce symptoms, the ligamentum flavum may be a bigger culprit than the disc itself. One study found that bulging of this ligament accounted for 50 to 85% of the reduction in canal area when the spine was loaded.6PubMed Central. Ligamentum Flavum Hypertrophy in Asymptomatic and Chronic Low Back Pain Subjects This matters because a report that mentions multilevel ligamentum flavum hypertrophy alongside disc changes is describing a more complete picture of how the canal space is being compromised.
When Degenerative Changes Actually Cause Symptoms
Degenerative changes become clinically significant when they narrow the spaces that nerves and the spinal cord pass through. Two patterns tend to produce the most noticeable symptoms.
The first is central stenosis, where the main spinal canal narrows enough to compress the bundle of nerves running through it. In the lumbar spine, this can cause aching, heaviness, or numbness in the legs that worsens with walking and improves with sitting or leaning forward. Imaging in patients with multilevel stenosis often shows varying degrees of narrowing at different segments, sometimes combined with a slip of one vertebra over another (spondylolisthesis) at a single level.7PubMed Central. Treatment of multilevel degenerative lumbar spinal stenosis with spondylolisthesis using a combination of microendoscopic discectomy and minimally invasive transforaminal lumbar interbody fusion
The second pattern is foraminal stenosis, where the side openings that individual nerve roots pass through become narrowed by a combination of disc loss, bone spurs, and facet overgrowth. This can produce radicular symptoms: pain, tingling, or weakness that follows the path of a specific nerve into the arm or leg.8PubMed Central. Lumbar foraminal neuropathy: an update on non-surgical management When both central and foraminal narrowing occur at several levels, the clinical picture can be more complex, sometimes making it harder for a clinician to pinpoint which level is generating the most trouble.
Why the Imaging Doesn’t Always Match the Pain
Perhaps the most frustrating aspect of multilevel degenerative changes is the poor relationship between what the images show and how a person feels. Two people can have nearly identical MRI findings but wildly different levels of pain. One may be running marathons; the other may be unable to sit through a meal. Research on this disconnect has found that the degree of structural damage seen on imaging is not reliably correlated with the presence or severity of pain.9PubMed Central. Impact of central sensitization on pain, disability and psychological distress in patients with knee osteoarthritis and chronic low back pain
Part of the explanation lies in the nervous system itself. In some people, prolonged pain signals lead to changes in how the brain and spinal cord process those signals, amplifying pain beyond what the structural damage alone would produce. This means that chasing every degenerative finding on an MRI with a targeted procedure can lead to disappointing results if the nervous system’s own pain-processing changes are a significant contributor. A clinician evaluating multilevel degenerative changes has to weigh the imaging alongside physical exam findings, symptom patterns, and the patient’s overall pain experience before deciding what, if anything, needs intervention.
Physical examination can help narrow things down, though individual bedside tests for nerve root compression have limited accuracy on their own. An overall clinical evaluation combining several tests and the patient’s history performs better than any single maneuver.10PubMed Central. Accuracy of physical examination for chronic lumbar radiculopathy
How the Report Language Itself Can Hurt
There is a real and documented problem with how radiology reports land on patients. Words like “degenerative,” “disease,” “deterioration,” and “multilevel” carry emotional weight that goes well beyond the clinical meaning. A survey of patients with low back pain found that roughly half reported experiencing at least one anxiety-related symptom while reading their own radiology report. Alarming terminology in reports has been shown to produce a nocebo effect, where the expectation of damage amplifies the experience of pain and reduces how well a person responds to conservative treatment.11PubMed Central. Low Back Pain Patients’ Perceptions Regarding Their Own Radiology Reports: Pre-Intervention Survey
This is worth keeping in mind if you have just received a report filled with these terms. The language is written for the referring physician, not for you, and it uses clinical shorthand that makes every finding sound like a problem. A disc bulge at L4-L5 mentioned in a report could be completely asymptomatic and identical to the disc bulges found in the majority of people your age who have never had an MRI. Ask your doctor which findings, if any, correspond to your symptoms. Plenty of them may be incidental.
Risk Factors Beyond Simple Aging
While age is the strongest predictor of degenerative disc changes, it is not the only one. A population-based study using a large insurance database identified several conditions that were significantly associated with developing degenerative disc disease: obesity, diabetes, tobacco use, and concurrent hip or knee osteoarthritis.12PubMed. Population-based Risk Factors for the Development of Degenerative Disk Disease Smoking is thought to impair blood flow to the disc, which is already one of the least-vascularized tissues in the body. Excess body weight increases the compressive loads the spine has to manage during every step and every hour of sitting. Diabetes may accelerate tissue breakdown through systemic inflammatory and metabolic pathways.
Genetics also play a role, though individual gene variants explain only a modest fraction of the variation between people. Occupational factors like heavy lifting and whole-body vibration have long been suspected of contributing, but the evidence on work-related exposure is more mixed than most people assume. The study mentioned above, for instance, found no significant association between military duty assignment and degenerative disc disease despite the physically demanding nature of many military roles.
When Surgery Enters the Conversation
Most people with multilevel degenerative changes never need surgery. Conservative management, which can include physical therapy, exercise, anti-inflammatory medication, and occasionally epidural steroid injections, remains the first-line approach. Surgery typically enters the picture when a specific structural problem is producing a clearly correlated neurological deficit: progressive weakness in a limb, loss of bladder or bowel control, or severe radicular pain that has not improved after months of conservative care.
When surgery is indicated for multilevel stenosis, the challenge is addressing the symptomatic levels without destabilizing the spine further. Minimally invasive techniques have gained traction for this reason. A study comparing a combined minimally invasive approach (microendoscopic discectomy plus minimally invasive fusion) against traditional open surgery for multilevel lumbar stenosis with spondylolisthesis found that the minimally invasive group had less blood loss, smaller incisions, and shorter bed-rest times, with similar short-term functional outcomes.7PubMed Central. Treatment of multilevel degenerative lumbar spinal stenosis with spondylolisthesis using a combination of microendoscopic discectomy and minimally invasive transforaminal lumbar interbody fusion That said, operating at multiple levels increases complexity and risk compared to a single-level procedure, so the decision is always a careful weighing of expected benefit against surgical burden.
Red Flags Worth Knowing About
Degenerative changes are common and usually benign, but certain symptoms should prompt urgent medical attention. These so-called red flags suggest that something beyond routine degeneration may be going on: unexplained weight loss, a history of cancer, fever with back or neck pain, rapidly worsening neurological symptoms (such as sudden leg weakness or loss of bladder control), and pain that is severe and unrelenting regardless of position. Clinician-led research on serious neck pathology has emphasized the value of recognizing early red flags to differentiate rare but dangerous conditions from benign musculoskeletal pain.13PubMed. Identifying red flags for serious neck pathology: A UK nominal group study If your report says multilevel degenerative changes and you have none of these warning signs, the findings are almost certainly routine.
An Evolutionary Wrinkle
One of the more surprising threads in spinal research is the idea that human spines are not uniformly well-designed for upright walking. The transition to bipedalism brought specific adaptations, including the lumbar and cervical curves that help us balance weight over our feet, but those same curves created mechanical vulnerabilities.14ScienceDirect. Anatomy, development, and evolution of the human spine A study comparing human vertebrae with those of chimpanzees and orangutans found that people who develop disc herniation tend to have vertebrae shaped more like those of our closest primate relatives, with features that may be less well adapted to the loads of walking upright. These included smaller nerve openings, shorter and wider pedicles, and more rounded vertebral bodies.15PubMed Central. The ancestral shape hypothesis: an evolutionary explanation for the occurrence of intervertebral disc herniation in humans
This does not mean your back problems are some kind of evolutionary leftover you can do nothing about. But it does offer a lens for understanding why disc degeneration and herniation are so widespread in humans compared to most other animals. Our spines are performing a balancing act that evolution optimized in a hurry, and some of us inherited vertebral shapes that handle the stress less gracefully than others. It is a reminder that multilevel degenerative changes are deeply woven into the human condition, not a sign that your spine has failed you personally.