What is Cervical Spondylosis?
Cervical Spondylosis is a general term for age-related wear and tear affecting the spinal disks in your neck. As the disks dehydrate and shrink, bone spurs and other signs of osteoarthritis develop.
Cervical spondylosis is very common and worsens with age. There also appears to be a genetic component involved because some families will have more of these changes over time, while other families will develop less.
More than 90 percent of people older than age 65 have evidence of cervical spondylosis and osteoarthritis that can be seen on neck X-rays. Most of these people experience no symptoms from these problems. When symptoms do occur, nonsurgical treatments often are effective.
Symptoms of Cervical Spondylosis
In most cases, cervical spondylosis causes no symptoms. When symptoms do occur, they typically affect only the neck — causing pain and stiffness.
Sometimes, cervical spondylosis results in a narrowing of the space needed by the spinal cord and the nerve roots that originate at the spinal cord and pass through the spine to the rest of your body. If the spinal cord or nerve roots become pinched, you may experience:
- Tingling, numbness and weakness in your arms, hands, legs or feet
- Lack of coordination and difficulty walking
- Loss of bladder or bowel control
When to see a Spine Specialist?
Seek medical attention if you notice sudden onset of numbness or weakness, or loss of bladder or bowel control.
Causes of Cervical Spondylosis
As you age, the bones and cartilage that make up your backbone and neck gradually develop wear and tear. These changes may include:
- Dehydrated disks. Disks act like cushions between the vertebrae of your spine. By the age of 40, most people’s spinal disks begin drying out and shrinking, which allows more bone-on-bone contact between the vertebrae.
- Herniated disks. Age also affects the exterior of your spinal disks. Cracks often appear, leading to bulging or herniated disks — which sometimes can press on the spinal cord and nerve roots.
- Bone spurs. Disk degeneration often results in the spine producing extra amounts of bone, sometimes called bone spurs, in a misguided effort to shore up the spine’s strength. These bone spurs can sometimes pinch the spinal cord and nerve roots.
- Stiff ligaments. Ligaments are cords of tissue that connect bone to bone. Increasing age can make spinal ligaments stiffen and calcify, making your neck less flexible.
Risk Factors of Cervical Spondylosis
Risk factors for cervical spondylosis include:
- Age. Cervical spondylosis is a normal part of aging. Spinal disks tend to dehydrate and shrink with the passing years.
- Occupation. Certain jobs may place extra stress on your neck. This may include repetitive neck motions, awkward positioning or a lot of overhead work.
- Neck injuries. Previous neck injuries appear to increase the risk of cervical spondylosis.
- Genetic factors. Some families will have more of these changes over time, while other families will develop less.
Complication of Cervical Spondylosis
If your spinal cord or nerve roots become severely compressed as a result of cervical spondylosis, the damage can be permanent.
Diagnosis of Cervical Spondylosis
During the exam, our spine specialist will check the range of motion in your neck. To find out if there’s pressure on your spinal nerves or spinal cord, our spine specialist will test your reflexes and check the strength of your muscles. He may want to watch you walk to see if spinal compression is affecting your gait.
A variety of imaging tests can provide details to guide diagnosis and treatment. Examples include:
- Neck X-ray. An X-ray may show abnormalities, such as bone spurs, that indicate cervical spondylosis. It is ordered primarily as a screening test to look for rare, serious causes for neck pain and stiffness such as tumors, infections or fractures.
- Computerized tomography (CT scan). This test takes X-rays from many different directions and then combines them into a cross-sectional view of the structures in your neck. It can provide much finer details than a plain X-ray, particularly of the bones.
- Magnetic resonance imaging (MRI). MRI uses a magnetic field and radio waves and can produce detailed, cross-sectional images of both bone and soft tissues. This can help pinpoint areas where nerves may be getting pinched.
- Myelogram. This test involves generating images using X-rays or CT scans after dye is injected into the spinal canal. The dye makes areas of your spine more visible.
Nerve Function Tests
In some cases, it may be helpful to determine if nerve signals are traveling properly to your muscles. Nerve function tests include:
- Electromyogram (EMG). This test measures the electrical activity in your nerves as they transmit messages to your muscles when the muscles are contracting and when they’re at rest. The purpose of an EMG is to assess the health of your muscles and the nerves that control them.
- Nerve conduction study. For this test, electrodes are attached to your skin above the nerve to be studied. A small shock is passed through the nerve to measure the strength and speed of nerve signals.
Treatment of Cervical Spondylosis
Treatment for cervical spondylosis depends on the severity of your signs and symptoms. The goal of treatment is to relieve pain, help you maintain your usual activities as much as possible, and prevent permanent injury to the spinal cord and nerves.
If over-the-counter pain relievers don’t help, our spine specialist might suggest:
- Muscle relaxants. Drugs may help if you’re having muscle spasms in your neck.
- Anti-seizure drugs. Some types of pregabalin (Lyrica), work well to dull the pain of damaged nerves.
- Narcotics. Some prescription pain relievers contain narcotics, such as hydrocodone (Vicodin, Lortab, others) or oxycodone
- Anti-inflammatory injections. In some cases, injecting anti-inflammatory medicine into the area affected by cervical spondylosis may help.
A physical therapist can teach you exercises to help stretch and strengthen the muscles in your neck and shoulders. Some people with cervical spondylosis may benefit from the use of traction, which can help provide more space within the spine if nerve roots are being pinched.
If conservative treatment fails or if your neurological signs and symptoms such as weakness in your arms or legs are getting worse, you may need surgery to create more room for your spinal cord and nerve roots. This may involve removing a herniated disk or bone spurs, or it could require the removal of part of a vertebra.