Cervical disc herniation

Cervical disc herniation: understanding, diagnosing, and treating this condition

A cervical disc herniation occurs when part of the nucleus of the intervertebral disc pushes against its ring and creates a tear. The nucleus can then protrude outside the ring. This condition is one of the possible causes of neck pain and can significantly affect your quality of life.

The good news? Most cervical disc herniations heal without surgery thanks to appropriate conservative treatment. Physical therapy plays a central role in this healing process by reducing nerve compression and decreasing inflammation around the disc.

What is the cervical intervertebral disc?

The intervertebral disc acts as a cushion between the vertebrae in your neck. Its main function is to absorb shock and allow the vertebrae to move freely. To better understand where these discs are located and how this anatomical region works, it is useful to know that your neck has seven cervical vertebrae separated by six discs.

The disc consists of two distinct parts. The nucleus, located in the center, is the soft, gelatinous part of the disc. The annulus, which surrounds the nucleus, forms the solid, fibrous part that holds the nucleus in place. This structure allows the disc to absorb shocks while allowing the neck to bend, extend, and rotate.

The most common cervical disc herniations occur at the C5-C6 and C6-C7 levels, which are the last two discs in the neck. These segments undergo the most mechanical stress during everyday movements. Women are more likely to have cervical herniations than men, although the reasons for this difference are not fully understood.

The stages of cervical disc herniation

The development of a cervical disc herniation generally occurs in several progressive stages. Understanding this process helps you better understand your condition and the treatment options available.

Bulging, or bulging disc, represents the beginning of the formation of a herniated disc. The nucleus pushes on the disc ring and slightly deforms it. Imagine a balloon that inflates on one side without bursting. At this stage, the structure of the disc remains intact even though its shape changes.

Protrusion occurs when the nucleus protrudes from the ring outside the disc. This protrusion of the nucleus constitutes the hernia itself. The fibrous ring now has a weakness that allows the nucleus to protrude, but the ring is not yet completely ruptured.

Extrusion occurs when a crack appears in the disc ring and the herniation protrudes further outward. This situation represents a larger herniation where disc material comes out through a tear in the ring. Cervical radiculopathy becomes more likely at this stage if the herniation compresses a nerve root.

Sequestration represents the most advanced but also the rarest stage. A piece of the hernia breaks off and moves independently into the spinal canal. Paradoxically, research shows that these sequestered hernias often have a better prognosis because the body can resorb them more easily.

What causes a cervical disc herniation?

You can develop a cervical disc herniation gradually over several years or suddenly following trauma. Understanding the cause of your herniation helps your physical therapist tailor treatment to your specific situation.

A herniated disc develops gradually as a result of the wear and tear that occurs in the disc over the years. The disc's ring becomes less solid over time. Small cracks can form in this ring, gradually weakening its resistance. The nucleus of the disc can put pressure on this crack and eventually cause a herniation. This degenerative process affects virtually everyone to varying degrees.

A traumatic disc herniation is caused by a specific event such as an accident or a sudden awkward movement involving a heavy load. At that precise moment, the disc ring may tear. The nucleus will then protrude from the disc through this tear. This type of herniation often occurs in younger people during sports activities or car accidents.

Risk factors include occupations involving vibration (such as driving heavy vehicles), prolonged forward head posture, smoking, which accelerates disc degeneration, and genetic factors that influence disc tissue quality.

What are the symptoms of a cervical disc herniation?

Symptoms vary considerably from person to person. Some people experience significant pain, while others have no symptoms at all, even with a hernia visible on medical imaging. This variability highlights the importance of consulting a doctor to properly assess your specific condition.

It is important to know that you can have a herniated disc without any symptoms. Imaging studies in healthy adults reveal that up to 78% of young adults in their twenties with no neck pain show signs of early disc herniation on MRI. These individuals have absolutely no pain, demonstrating that the presence of a herniation does not necessarily equate to a source of problems.

When symptoms are present, they generally include gradual or sudden neck pain, neck muscle spasms in the form of involuntary contractions, reduced neck mobility due to pain, and sometimes the head remains tilted forward because the person is unable to straighten it due to the severity of the pain.

If you also experience pain, numbness, or tingling that radiates into your arms, it is possible that the herniated disc is irritating one or more nerves. This condition is called cervicobrachialgia or cervical radiculopathy. In this case, the herniated disc is compressing or irritating a nerve that runs down your arm. Physical therapists sometimes see patients who come in with their hand on their head, as this is the only position they have found to relieve the pain radiating down their arm.

What are the serious symptoms to watch out for?

Severe symptoms remain rare, affecting less than 1% of cases. In most cases, although the pain can be very unpleasant, the condition responds well to appropriate treatment. Physical therapy for neck pain is usually effective in managing symptoms.

The presence of certain signs and symptoms should prompt you to seek immediate medical attention at the emergency room or from a doctor. These red flags include severe weakness or paralysis in one or both arms, significant or complete loss of sensation in one or both arms, recent loss of balance when walking, new incoordination of the arms or hands, new difficulties controlling urine or bowel movements, and loss of sensation in the genital area.

If you experience any of these symptoms, do not delay and seek medical attention immediately. These symptoms may indicate more severe compression requiring prompt intervention.

How to diagnose a cervical disc herniation?

The diagnosis is based on your symptom history and clinical examination. Your physical therapist or doctor will ask you questions about how the pain started, how it has progressed, and what factors aggravate or relieve it. He or she will then assess your mobility, strength, and sensitivity in your neck and arms.

The clinical examination includes neurological tests to check the integrity of the cervical nerves. Your therapist will test your reflexes, muscle strength in different muscle groups, and sensitivity to light touch. These tests help determine whether a specific nerve root is affected and to what degree.

In some rare cases, it is necessary to undergo radiological examinations (X-ray, MRI, EMG) to determine the severity of the herniated disc or to find out if it is compressing a nerve in the neck. MRI is the most accurate test for visualizing discs and nerves. It is important to note that a herniated disc cannot be seen on a simple X-ray.

Rest assured, just because a hernia appears on an image does not necessarily mean that it is the cause of your pain. Imaging results must always be interpreted in conjunction with your clinical symptoms. A visible but asymptomatic hernia does not usually require specific treatment.

When should you see a physiotherapist for a cervical herniated disc?

You should consult a physical therapist if you have symptoms as described above or if your doctor has already ruled out any other causes for your pain. Physical therapy is usually the first line of treatment for cervical disc herniation.

You do not need to see a doctor before consulting a physical therapist. Physical therapists are front-line professionals who can assess your condition and determine whether it requires a medical referral. If your condition requires you to see a doctor, your physical therapist will be able to tell you.

The good news is that physical therapy can help you even if you have a herniated disc. Treatments can reduce compression on the nerve and decrease inflammation around the disc. The conservative approach allows the majority of patients to avoid surgery and regain normal function.

What physiotherapy treatments are available for a cervical herniated disc?

Your physical therapist will first perform an assessment to determine why your herniated disc is causing you pain. This assessment examines several key elements of your condition.

Your joint mobility will be assessed to understand how your vertebrae move. The sliding of your nerves will be tested to see if they are pinched or irritated. Your posture habits will be observed to understand how you stand on a daily basis. The quality of your movements will be analyzed to see how you move your neck. Finally, your strength and stability will be measured to determine if your muscles are strong enough to support your neck.

Based on the results of the assessment, your physical therapist will use different therapeutic approaches. Joint mobilization and manipulation of the joints, muscles, and nerves in your neck can reduce pain and improve movement. These manual techniques relieve protective spasms and restore normal mobility.

You will be taught specific exercises to do at home. These exercises aim to address the cause of the problem and relieve pain. The preferred direction approach, also known as the McKenzie method, identifies the movements that centralize your symptoms and promote healing.

Your physical therapist will also teach you how to balance your daily activities and leisure time to optimize healing. Advice on your posture and movements will complete the treatment program. Nerve treatment techniques can be particularly effective if the hernia causes nerve compression.

In some cases, if the herniated disc also causes nerve compression (radiculopathy), your physical therapist will adapt the treatments accordingly. Nerve mobilization techniques and decompression exercises help restore normal nerve movement and reduce irritation.

What can you do at home for a cervical herniated disc?

Temporarily stop doing movements that cause too much pain. Gradually start doing them again when the pain subsides. This gradual approach allows the body to heal while maintaining an appropriate level of activity.

Several strategies can help relieve your symptoms at home. Move your neck in ways that do not cause pain to maintain mobility without aggravating the condition. Support your shoulders and shoulder blades by using a cushion under your armpit, the armrests of a chair or sofa, or by putting your hand in your pants pocket when standing.

Limit the amount of time you spend in the same position, whether at the computer, in front of the television, or reading. Get up often for a few minutes to move your neck and shoulders around a bit. These regular breaks reduce the buildup of tension and promote blood flow to the tissues.

Make sure your neck is well supported at night with a pillow that fills the hollow of your neck. A good-quality pillow maintains the natural alignment of the cervical spine while you sleep. Sleeping on your stomach should be avoided, especially if you experience stiffness or pain in the morning or during the night.

If you see no improvement after 10 days of home care, you should consult a physical therapist for a complete evaluation and personalized treatment plan.

The natural healing process of cervical disc herniations

Most cervical disc herniations heal without surgery with appropriate conservative treatment. The body has natural mechanisms for resorbing disc herniations, allowing many patients to recover completely.

Serial imaging studies show that most herniated discs decrease in size or disappear over time. This resorption process involves an inflammatory response which, paradoxically, helps the body eliminate the herniated material. Immune cells infiltrate the herniated area and gradually phagocytose the nucleus pulposus that has migrated outside the annulus.

Even a large hernia can resolve naturally thanks to the body's healing processes. Large hernias often show more complete resolution than small hernias because they trigger a greater immune response. This phenomenon explains why the prognosis is not necessarily worse for large hernias.

The role of physical therapy during this natural healing process is to manage symptoms, maintain function, and prevent compensatory adaptations that could cause secondary problems. Stabilizing muscle exercises help maintain cervical stability during recovery.

When does surgery become necessary?

Surgery for cervical disc herniation remains reserved for cases with specific indications. Absolute indications include spinal cord compression syndrome with progressive neurological symptoms, and any motor neurological deficit that worsens despite conservative treatment.

Relative indications include failure of conservative treatment after 6-12 weeks with persistent severe symptoms and major functional limitations. The decision to undergo surgery is made in collaboration with your healthcare team based on your specific situation.

The majority of patients with cervical disc herniation will never need surgery. Studies show that long-term outcomes between conservative and surgical treatment are comparable in most cases. Surgery mainly offers faster relief, but not necessarily a better final outcome.

Did you know?

Research on cervical disc herniation has revealed several surprising facts. Up to 78% of young adults in their twenties with no neck pain show signs of early disc herniation on MRI scans. This finding highlights that structural changes are extremely common and are likely part of normal aging.

The most common cervical disc herniations occur at the C5-C6 and C6-C7 levels, which are the last two discs in the neck. These segments are subject to the greatest mechanical stress and are therefore more likely to develop disc problems.

The presence of a herniation on imaging does not necessarily predict pain or disability. What really matters is the correlation between radiological findings and your clinical symptoms. A comprehensive approach to pain helps to understand all the factors that contribute to your painful experience.

Getting help for your cervical disc herniation

If your cervical disc herniation causes you pain or limits your daily activities, our physical therapists can help. A comprehensive assessment will determine the exact cause of your symptoms and develop a personalized treatment plan.

Our approach incorporates the most effective techniques validated by scientific research. We use preferential direction assessment to identify optimal therapeutic movements, neural mobilization to restore normal nerve gliding, and strengthening exercises to restore strength and motor control.

Beyond relieving immediate symptoms, we equip you with the knowledge and skills necessary to manage your condition long-term and prevent recurrences. Understanding the natural healing process and self-management strategies allows you to actively participate in your recovery.

Sources

Sharrak S, Al Khalili Y. Cervical Disc Herniation. StatPearls [Internet]. 2020 Aug 10.

Okada E, Matsumoto M, Fujiwara H, Toyama Y. Disc degeneration of cervical spine on MRI in patients with lumbar disc herniation: comparison study with asymptomatic volunteers. European Spine Journal. 2011 Apr 1;20(4):585-91.