What Degenerative Changes of the Spine Mean
Degenerative changes of the spine refer to age-related and wear-related structural alterations affecting the intervertebral discs, vertebral bodies, facet joints, and surrounding ligaments—changes that are extremely common in adults over 30 years of age and frequently occur without causing any symptoms.
Understanding the Terminology
When you see "degenerative changes" on an imaging report, this describes a spectrum of anatomical findings that include:
- Disc degeneration: Loss of disc height, disc desiccation (drying out), and disc bulging
- Osteophyte formation: Bone spurs developing at vertebral margins
- Facet joint arthropathy: Arthritis of the small joints in the back of the spine
- Ligamentous changes: Thickening or calcification of spinal ligaments
- Endplate changes: Alterations in the bone surfaces adjacent to discs 1, 2
The Critical Distinction: Normal Aging vs. Pathology
The presence of degenerative changes does NOT automatically mean you have a disease requiring treatment. This is the most important concept to understand 3.
Why These Findings Are Often Meaningless:
- Degenerative changes are found in the majority of asymptomatic people over 30 years old 3
- In one study, 53.9% of individuals between 18-97 years showed disc degenerative changes, with prevalence increasing with age 4
- A systematic review found disc protrusions in 29% of asymptomatic 20-year-olds and 43% of asymptomatic 80-year-olds 5
- These findings correlate poorly with the presence or absence of pain 3
The Evidence on Symptom Correlation:
A 10-year longitudinal MRI study demonstrated that cervical disc degeneration progressed in 85% of patients, but symptoms developed in only 34% 3. Even more striking, 84% of patients with lumbar imaging abnormalities before the onset of back pain had unchanged or improved findings after symptoms developed 5.
When Degenerative Changes Matter
Degenerative changes become clinically significant only when they cause:
- Nerve compression leading to radiculopathy (arm or leg pain, numbness, weakness)
- Spinal cord compression causing myelopathy (difficulty walking, hand clumsiness, bowel/bladder dysfunction)
- Spinal instability with progressive deformity
- Severe spinal stenosis causing neurogenic claudication (leg pain with walking that improves with rest)
Clinical Implications
For Chronic, Unchanging Pain Without Neurological Symptoms:
The presence of degenerative changes alone does not require cross-sectional imaging (MRI or CT) 3. This is because:
- The findings rarely change management
- They don't predict who will respond to conservative treatment
- They can lead to unnecessary interventions targeting "abnormalities" that aren't causing symptoms
Common Pitfall to Avoid:
Do not assume that degenerative changes seen on imaging are the source of your pain. The correlation between imaging findings and symptoms is weak 3. Treatment decisions should be based on clinical presentation, not imaging findings alone 6.
The Multi-Factorial Nature:
Degenerative changes result from a combination of:
- Physiologic aging (senescence)
- Genetic factors
- Chronic mechanical loading
- Previous injuries
- Occupational factors 1, 7, 8
Regional Variations
The lumbar spine (lower back) typically shows more severe and widespread degeneration than the cervical spine (neck), with the most affected levels being L4-L5 and L5-S1 in the lumbar region and C5-C6 in the cervical region 9. This reflects the different biomechanical stresses these regions experience.
Bottom Line for Patients
If your imaging report mentions degenerative changes but you have no neurological symptoms (no radiating pain, numbness, weakness, or walking difficulties), these findings likely represent normal aging and should be interpreted with caution 3. Conservative management with physical therapy and pain control remains first-line treatment regardless of imaging findings 5.