Cervical Stenosis

Overview

Cervical stenosis is a narrowing of the spinal canal in the cervical spine, the part of the backbone in the neck. The spinal canal is the channel that protects the spinal cord and the nerve roots that branch off from it. When this canal narrows, it can squeeze the spinal cord, the nerve roots, or both, leading to a range of symptoms in the neck, arms, and sometimes the legs.

The condition usually develops slowly with age as the discs, joints, and ligaments of the spine wear and thicken. Many people with mild narrowing have no symptoms at all. When the spinal cord becomes compressed, a more serious problem called cervical myelopathy can develop, affecting strength, sensation, coordination, and balance. Because pressure on the spinal cord can worsen over time, recognizing the warning signs and seeking evaluation is important.

Symptoms

Symptoms depend on whether nerve roots, the spinal cord, or both are affected.

• Neck pain or stiffness
• Pain, numbness, or tingling that radiates into the shoulder, arm, or hand
• Weakness or clumsiness in the hands, such as trouble with buttons or handwriting
• Heaviness or weakness in the legs and difficulty with balance or walking
• A feeling of electric shock down the spine when bending the neck forward
• In severe cases, problems with bladder or bowel control

Difficulty walking, frequent dropping of objects, or new bladder or bowel problems are red flags that need prompt evaluation.

Causes

Cervical stenosis most often results from age-related changes in the spine, though other factors can contribute.

• Wear-and-tear (degenerative) changes: Bulging or collapsing discs, bone spurs, and thickened ligaments narrow the canal over time.
• Herniated discs: Disc material pressing into the canal.
• A naturally narrow canal: Some people are born with less space, making symptoms more likely with later changes.
• Injury: Neck trauma that damages the spine.
• Other conditions: Such as certain forms of arthritis or abnormal bone growth.

Risk Factors

• Older age
• A naturally narrow spinal canal
• Long-standing degenerative disc and joint disease
• Previous neck injury
• Certain types of arthritis affecting the spine
• Physically demanding work or repeated neck strain over many years

Diagnosis

Diagnosis combines an assessment of symptoms and neurological function with imaging.

• Physical and neurological exam: Testing strength, sensation, reflexes, coordination, and walking.
• MRI: The best test for showing the spinal cord, nerves, and the degree of narrowing and any cord compression.
• CT scan or X-rays: To show bony detail, alignment, and arthritis or bone spurs.
• Nerve studies: Occasionally used to assess nerve function and distinguish other causes.

Treatment

Treatment depends on how severe the symptoms are and whether the spinal cord is being compressed.

• Conservative care: For milder cases, physical therapy, activity adjustment, pain relievers, and sometimes a short course of other medications.
• Injections: Steroid injections may ease nerve-related pain in selected cases.
• Surgery: When the spinal cord is compressed or symptoms are progressive, surgery to relieve pressure (decompression), sometimes with fusion, may be recommended to prevent further decline.
• Monitoring: People with mild findings are often watched for any change in symptoms.

Early surgery is sometimes advised for significant cord compression because nerve damage may not fully recover once it is established.

Prevention

Age-related narrowing cannot be fully prevented, but neck health can be supported.

• Stay physically active and maintain good neck and shoulder strength
• Use good posture, especially with prolonged computer or phone use
• Practice safe lifting and avoid repeated neck strain
• Protect the neck from injury, including using seatbelts and proper sports technique
• Seek evaluation early if you notice hand clumsiness or balance changes

When to See a Doctor

See a doctor if you have persistent neck pain with arm numbness, weakness, or tingling, or if your hands feel clumsy. Seek urgent or emergency care for:

• New or worsening weakness in the arms or legs
• Trouble walking or a sudden loss of balance
• New loss of bladder or bowel control
• Symptoms that follow a significant neck injury

Related Topics

Frequently Asked Questions

References

1. American Academy of Orthopaedic Surgeons (AAOS). Cervical spondylotic myelopathy.
2. Mayo Clinic. Spinal stenosis.
3. MedlinePlus, U.S. National Library of Medicine. Spinal stenosis.
4. National Institute of Neurological Disorders and Stroke (NINDS).