What is Degenerative Disc Disease?

Degenerative disc disease, also called DDD or degenerative disk disease, refers to wear, dehydration, thinning, or structural change of the intervertebral discs. These discs sit between the vertebrae and help cushion the spine.

Despite the name, degenerative disc disease is not always a true “disease.” It is a medical term used to describe disc changes that may occur over time. Some people have degenerative disc changes on MRI or X-ray without pain. Others may develop discogenic pain, neck pain, low back pain, stiffness, or nerve-related symptoms when disc changes affect nearby nerves or spinal structures.

Degenerative disc disease may occur in the cervical spine in the neck, thoracic spine in the mid back, or lumbar spine in the lower back. De Novo Brain & Spine evaluates adult patients with degenerative disc disease when symptoms suggest nerve compression, spinal stenosis, radiculopathy, spinal instability, herniated disc, or persistent spine-related pain that may require neurosurgical review.

Common Signs and Symptoms

Degenerative disc disease symptoms depend on the affected spinal level, severity of disc changes, and whether nearby nerves, joints, or the spinal canal are involved.

Common signs and symptoms may include:

• Neck pain, mid back pain, or low back pain
• Pain that worsens with sitting, bending, lifting, twisting, or prolonged positioning
• Pain that improves with position changes in some patients
• Stiffness or reduced range of motion
• Muscle tightness or spasms
• Aching, sharp, burning, or deep pain near the affected spinal level
• Discogenic pain, meaning pain thought to come from the intervertebral disc
• Pain that travels into the shoulder, arm, hand, or fingers when cervical nerves are affected
• Pain that travels into the buttock, hip, thigh, calf, or foot when lumbar nerves are affected
• Sciatica, meaning radiating leg pain along the sciatic nerve pathway
• Numbness or tingling in the arm, hand, leg, or foot
• Weakness in the arm, hand, leg, ankle, or foot when nerve compression is present
• Balance problems, trouble walking, or loss of hand coordination when spinal cord compression is present

Seek urgent medical evaluation for progressive weakness, foot drop, worsening numbness, balance problems, trouble walking, loss of hand coordination, numbness in the groin or saddle area, new bowel or bladder problems, fever, unexplained weight loss, history of cancer, severe pain after trauma, or rapidly worsening neurological symptoms. Seek emergency medical care or call 911 for symptoms concerning for cauda equina syndrome, spinal cord compression, stroke, or another emergency condition.

What Causes This Condition?

Degenerative disc disease develops when spinal discs lose hydration, height, flexibility, or structural strength. Disc degeneration can occur gradually over time and may be influenced by several factors.

Possible causes and related factors may include:

• Age-related disc wear or dehydration
• Loss of disc height
• Annular tears, meaning small tears in the outer disc layer
• Repetitive bending, lifting, twisting, or spine stress
• Heavy physical work or repetitive vibration exposure in some patients
• Prior spine injury or trauma
• Genetic or family tendency toward disc degeneration
• Smoking, which may affect disc health in some patients
• Excess body weight, which may increase stress on spinal structures
• Poor conditioning or reduced spinal support in some patients
• Associated spine changes, such as facet joint disease, spondylosis, spinal stenosis, bulging disc, or herniated disc

These causes and risk factors do not mean every patient with degenerative disc disease will have pain. Treatment planning depends on symptoms, neurological examination, imaging findings, nerve or spinal cord involvement, response to prior care, and overall health.

How It Is Diagnosed?

Degenerative disc disease is diagnosed by combining the patient’s symptoms, physical examination, neurological examination, and imaging findings. Imaging alone is not always enough because disc degeneration can appear on scans in people who do not have pain.

Common diagnostic steps may include:

• Medical history and symptom review to understand neck pain, back pain, arm pain, leg pain, stiffness, numbness, tingling, weakness, triggers, injury history, and prior treatment
• Physical examination to evaluate posture, range of motion, tenderness, muscle spasm, walking pattern, and painful movement
• Neurological examination to assess strength, sensation, reflexes, coordination, gait, balance, and signs of nerve root or spinal cord involvement
• X-rays of the spine to evaluate alignment, disc space narrowing, arthritis, bone spurs, instability, fracture, or degenerative change
• Flexion-extension X-rays in selected cases when abnormal motion or spinal instability is suspected
• MRI of the cervical, thoracic, or lumbar spine to evaluate disc dehydration, disc height loss, herniated disc, bulging disc, nerve root compression, spinal stenosis, spinal cord compression, tumor, infection, or other soft-tissue findings
• CT scan when bone detail, fracture, arthritis, or surgical planning requires further evaluation
• CT myelogram in selected cases when MRI is not possible or when additional detail around the spinal canal and nerve roots is needed
• Electromyography and nerve conduction studies, also called EMG/NCS, when symptoms may overlap with radiculopathy, peripheral neuropathy, carpal tunnel syndrome, ulnar neuropathy, or peroneal neuropathy
• Diagnostic injections in selected cases when the pain source may involve a disc, facet joint, sacroiliac joint, or nerve root
• Blood tests in selected cases when infection, inflammatory disease, cancer-related concern, or another medical condition is suspected

The goal of diagnosis is to determine whether degenerative disc disease is likely causing symptoms, identify whether nerve or spinal cord compression is present, and decide whether conservative care, injections, or surgical evaluation may be appropriate.

Treatment Options

Degenerative disc disease treatment depends on the location of disc degeneration, symptom severity, neurological examination, imaging findings, spinal stability, nerve or spinal cord involvement, prior treatment, activity limitations, and overall health. Many patients begin with non-surgical care when there is no progressive neurological deficit, cauda equina syndrome, spinal cord compression, fracture, infection, tumor, or other urgent concern.

Treatment options may include:

• Observation and symptom monitoring when degenerative disc changes are found incidentally and are not causing symptoms
• Activity modification to reduce positions, lifting, bending, twisting, or movements that worsen symptoms
• Physical therapy to improve posture, mobility, strength, flexibility, core support, and safe movement mechanics
• Home exercise and stretching when recommended by a clinician or therapist
• Heat, ice, or other comfort measures for short-term symptom relief
• Anti-inflammatory medication, acetaminophen, muscle relaxants, or nerve pain medication when medically appropriate
• Treatment of posture, ergonomic, conditioning, or activity-related contributors
• Cervical or lumbar epidural steroid injection in selected cases involving nerve root inflammation or radiating arm or leg pain
• Facet joint injection, medial branch block, or radiofrequency ablation in selected cases when facet joint pain contributes to symptoms
• Sacroiliac joint evaluation or injection in selected cases when SI joint pain overlaps with lower back symptoms
• Basivertebral nerve ablation in selected patients with vertebrogenic low back pain and appropriate MRI findings
• Microdiscectomy in selected cases when disc herniation causes significant nerve compression and radiculopathy
• Anterior cervical discectomy and fusion, also called ACDF, in selected cervical cases involving nerve compression, spinal cord compression, instability, or disc-related symptoms
• Cervical disc replacement in selected patients with appropriate anatomy and cervical disc-related nerve compression
• Lumbar decompression in selected cases when spinal stenosis or nerve compression is present
• Lumbar fusion, such as transforaminal lumbar interbody fusion, lateral interbody fusion, or anterior lumbar interbody fusion, in selected cases involving instability, deformity, spondylolisthesis, or certain recurrent spine conditions
• Lumbar disc replacement in selected patients with appropriate anatomy and carefully selected disc-related pain
• Rehabilitation and follow-up care to monitor pain, strength, mobility, walking, function, and neurological status

Surgery is not appropriate for every patient with degenerative disc disease. Neurosurgical treatment may be considered when degenerative disc disease is associated with significant nerve compression, spinal cord compression, spinal instability, progressive weakness, persistent radiculopathy, or symptoms that do not improve with appropriate non-surgical care.