What is degenerative disc disease?
Despite the name, degenerative disc disease is not a true disease — it's the natural aging of the spinal discs, accelerated in some patients more than others. As discs lose water content, height, and elasticity, they become less effective shock absorbers. For most people the changes are asymptomatic; in others they produce chronic mechanical pain and predispose to herniations, stenosis, and instability.
Anatomy
Disc degeneration begins in young adulthood and is progressive throughout life. Lumbar discs are most often affected because they bear the highest mechanical load. As a disc loses height, the surrounding facet joints take on more stress and develop arthritis themselves — which is why DDD frequently coexists with stenosis and spondylolisthesis.
Symptoms
- Chronic, dull, mechanical neck or low back pain
- Pain worsened by sitting, bending, lifting, or twisting
- Pain relieved by lying flat or changing position
- Periodic flare-ups of more severe pain
- Stiffness, especially after periods of inactivity
- Symptoms occasionally radiate into the shoulders, buttocks, or thighs
Causes
- Natural aging of the discs
- Genetic predisposition
- Smoking — strongly associated with accelerated disc degeneration
- Obesity, which increases mechanical load
- Heavy occupational or athletic loading
- Prior injury
Who is at risk?
- Age — virtually universal by age 60 on imaging, though many remain asymptomatic
- Smoking and poor cardiovascular health
- Obesity
- Family history
- Heavy lifting or repetitive twisting occupations
Diagnosis
Diagnosis is made by combining symptom pattern with imaging. X-rays show disc-height loss and bone spurs; MRI is the most informative study, showing disc hydration, height, and any associated nerve compression. Discography is occasionally used in select cases to identify whether a specific disc is the pain generator.
When to see a spine surgeon
Consider evaluation when pain limits work, sleep, or daily activities for more than several months despite conservative care, or when new neurologic symptoms appear. Sudden severe pain, weakness, or bowel/bladder changes warrant urgent assessment.
Non-surgical treatment
Most patients improve with non-surgical care: physical therapy for core strengthening and aerobic conditioning, weight management, smoking cessation, NSAIDs, and image-guided injections (epidural steroid injections, medial branch blocks, or radiofrequency ablation when facet joints are the primary pain source).
Surgical options
Surgery is reserved for refractory mechanical pain or for DDD that has produced significant herniation, stenosis, or instability. Options include cervical disc replacement (motion-preserving) and minimally invasive lumbar fusion (TLIF, ALIF, lateral, or endoscopic TLIF). The specific recommendation depends on the level affected, anatomy, and patient priorities.
Related procedures
Cervical Disc Replacement (CDR)
A motion-preserving alternative to fusion — replaces a damaged cervical disc with an artificial implant designed to mimic natural neck movement.
Anterior Lumbar Interbody Fusion (ALIF)
A two-stage spinal surgery that combines an anterior approach through a small abdominal incision with robotic-guided posterior pedicle screw fixation.
Lateral Lumbar Interbody Fusion (LLIF / XLIF / DLIF)
A minimally invasive spine surgery that reaches the damaged disc through a small incision on the side rather than through the back.
Lumbar Fusion (PLIF / TLIF)
Permanently joins two or more vertebrae in the lower back to eliminate painful motion and restore spinal stability.
This page is for general educational purposes and is not medical advice. Diagnosis and treatment recommendations require an in-person evaluation. To schedule a consultation with Erick R. Kazarian, MD, please book an appointment.