Do you know about this amazing structure in your neck? (Cervical Spine) Let's talk!

Have you ever wondered how important your neck is, how wonderfully designed it is? Just think, keeping your head straight, looking around, looking up, looking down, nodding your head to say "yes", shaking your head from side to side to say "no"... all of this is helped by this complex structure in your neck. Today we are going to talk about the top part of your spine, which is medically known as the cervical spine . It is like an engineering marvel of our body!

What is the cervical spine?

Simply put, the part of your spine in your neck is called the cervical spine. It is made up of seven small bones stacked on top of each other. These bones are called vertebrae . They are numbered C1 to C7.

Think of it like a tower of toy blocks, one on top of the other. But it's much more complex and stronger.

The first two of these seven vertebrae (C1 and C2) are a bit special.

• C1 vertebra: This is also called Atlas . Remember Atlas from Greek mythology, who held the world on his shoulders? Just like him, this bone helps hold up your head. It's shaped like a ring, like a support at the bottom of your skull.
• C2 vertebra: This is called the Axis . This is where the C1 atlas rotates. When you shake your head from side to side to say "no," the atlas seems to twist on this axis. Isn't it amazing?

These vertebrae, from C1 to C7, are connected to each other at the back by special joints called facet joints . These joints allow you to bend your neck forward, backward, and turn it from side to side.

There are many muscles, nerves, tendons, and ligaments surrounding this cervical vertebra. Also, when one vertebra is on top of another, there are something called intervertebral discs in between them. These are like shock absorbers in a car. That is, they absorb the vibrations that come to the neck and prevent the vertebrae from hitting each other.

Another important thing is that along your entire spine, from your neck down, in the middle is the spinal cord . This spinal cord is what carries messages from the brain to the rest of the body, and the messages from the body back to the brain. It's like the main information pathway in our body.

What are the main functions of the cervical vertebrae?

Although it may seem small, the service provided by the cervical vertebrae is enormous.

1. Protecting the spinal cord: As we mentioned earlier, the spinal cord runs through the middle of the spine. Each vertebra has a large hole in the middle called the vertebral foramen . When all these holes line up, they form a tube. The spinal cord runs through that tube. So, the cervical vertebrae provide good protection for the part of the spinal cord in the neck.

2. Supports the head and allows movement: The average head weighs between 10 and 13 pounds (about 4.5 and 6 kg). This weight is supported by the cervical vertebrae. Not only that, but you can also bend your neck forward (flexion) , backward (extension) , turn it from side to side (rotation) , or bend it to the side so that your ear touches your shoulder (lateral flexion) . This part helps with all of this.

3. Providing a safe passage for the arteries that carry blood to the brain: There are small holes in the cervical vertebrae from C1 to C6. Through these holes, blood vessels called vertebral arteries carry blood to the brain. This is the only part of the entire spine that has holes in the bone for arteries to pass through.

Think of your neck as a busy junction. On one side, your head is held high, and on the other side, it carries important messages and blood to the brain, all while protecting it!

What other important soft tissues are around the cervical spine?

Not only the vertebrae, but many other things are related to this system.

Muscles

There are several key muscles that help with neck movement and stability:

• Sternocleidomastoid: This is a muscle that runs from behind the ear to the front of the neck on either side of the neck. It is what works when you turn your head from side to side and lift your chin.
• Trapezius: These are two triangular muscles. They run from the base of the skull, down the neck, along the thoracic spine, and attach to the shoulder blades. They help lift the head up, bend the neck back, turn the head to the right and left, and slightly raise the shoulders.
• Levator scapulae: This muscle is attached to the first four cervical vertebrae and the top of the shoulder blade. It helps to raise the shoulder blade, tilt the head to the side, and turn the head.
• Erector spinae: This is a group of muscles that help maintain an upright posture, rotate the neck, and bend it backward.
• Deep cervical flexors: These run down the front of the cervical spine. They help bend the neck forward and stabilize the cervical spine.
• Suboccipital muscles: These are four pairs of muscles. They connect the top of the cervical vertebrae to the base of the skull. They help to tilt and turn the head backward.

Ligaments

Ligaments are like bands that connect bones together and help keep the cervical spine stable. There are three main ligaments:

• Anterior longitudinal ligament: This runs from the base of the skull down the front of the cervical vertebrae. It stretches when the neck is bent backward.
• Posterior longitudinal ligament: This starts at the C2 vertebra and runs down the back of the cervical vertebrae. It stretches when the neck is bent forward.
• Ligamentum flava: This ligament covers the inside back of each vertebra, along the path of the spinal cord. It protects the spinal cord from the back.

Intervertebral Disks

As we mentioned earlier, these are the "shock absorber cushions" between the vertebrae. There are six of these discs between the seven cervical vertebrae. They absorb pressure and shock to the neck, and they also help you bend and turn your neck easily when you're doing activities.

Nerves

Eight pairs of nerves emerge from between each pair of cervical vertebrae through small openings (foramen). These are labeled C1 through C8. These nerves control the movement of muscles in the neck, shoulder, arm, and hand, as well as providing sensation in those areas.

• C1, C2, C3 nerves: Control forward, backward, and side-to-side movement of the head and neck. The C2 nerve provides sensation to the top of the head, and the C3 nerve provides sensation to the sides of the face and back of the head.
• C4 nerve: Controls upward movement of the shoulder. It is also one of the nerves that controls the diaphragm, which helps you breathe. C4 provides sensation to parts of the neck, shoulders, and upper arms.
• C5 nerve: Controls the deltoid muscle and biceps of the shoulder. Provides sensation from the top of the upper arm to the elbow.
• C6 nerve: Controls the extensor muscles of the wrist, is also involved in controlling the biceps. Provides sensation to the forearm and thumb side of the hand.
• C7 nerve: Controls the triceps and wrist flexor muscles. Provides sensation along the back of the arm to the middle finger.
• C8 nerve: Controls the palm. Provides sensation to the little finger side of the hand and forearm.

Spinal Cord

This is a bundle of nerve tissue that runs from the lower part of the brain down through the body. It is through this spinal cord that messages are exchanged between the brain and the muscles that we talked about earlier.

What diseases can occur in the cervical spine?

Can problems arise in such a complex structure? Yes, various diseases can occur in the cervical spine, the soft tissues around it, and the nerves. Don't be afraid, it's important to be aware of these.

• Cervical Radiculopathy: A condition caused by compression of a nerve root by a cervical vertebra. Numbness, loss of sensation, weakness, and pain may occur. These symptoms may be limited to the neck or may extend down the entire arm, into the palm, and fingers. This is also called a pinched nerve .
• Neck pain: This is a common problem for many people. Neck pain can be caused by a variety of conditions and disorders. Degenerative diseases (e.g., osteoarthritis , spinal stenosis , herniated disc , pinched nerve), whiplash, stress, physical exertion, poor posture, tumors, cysts, bone spurs, meningitis , rheumatoid arthritis , and cancer can all cause neck pain.
• Cervical Degenerative Disk Disease: The degeneration of the "shock absorber" discs in the cervical spine.
• Herniated Disc: A tear or leak in the disc between the vertebrae.
• Cervical Osteophytes / Bone spurs: Extra bone growths on any of the seven cervical vertebrae.
• Cervical Spondylosis: Also called "neck arthritis," this is the gradual deterioration of the vertebrae and joints in the cervical spine with age.
• Cervical Spinal Cord Injury: Damage to the cervical vertebrae. This type of injury is often caused by a sudden, forceful blow.
• Cervical Spinal Fracture: A fracture of the spine. A person with osteoporosis can suffer a fracture-dislocation from a minor injury, such as a compression fracture, a burst fracture, or a car accident or fall from a height.
• Cervical Spondylotic Myelopathy: Pressure on the spinal cord in the cervical region. The main cause of this is degeneration of the bones of the spine, which is osteoarthritis.
• Cervical Stenosis: Narrowing of the spinal canal in the cervical region. When the space is reduced, the spinal cord or the nerves that exit it can become compressed or pinched.
• Cervical Spinal Tumors and Cancer: Abnormal tissue growths within the spinal cord. These can be noncancerous (benign) or cancerous (malignant).
• Meningitis: An infection of the meninges, the protective covering around the brain and spinal cord.
• Osteomyelitis: A bacterial or fungal infection of the bones, in this case the vertebrae of the spine. If left untreated, the vertebrae can die.

How are these diseases diagnosed?

If you have a neck problem, your doctor will first ask about your medical history, the medications you are taking, ask about your symptoms, perform a physical examination, and then order any necessary tests and imaging studies.

This may include:

• CT scan (Computed Tomography (CT) scan): This uses X-rays and a computer to take very thin "slices" of the area being examined. It can look at the shape, size, contents of the spinal canal, and the bones around it. It can help detect things like bone spurs, osteophytes, bone fusion, and bone destruction caused by infection or tumors.
• MRI scan (Magnetic Resonance Imaging (MRI): This uses a large magnet, radio waves, and a computer to produce detailed images. It can detect problems with the spinal cord and nerves that exit the spine, such as spinal degeneration, slipped disc (disk herniation), infections, and tumors.
• X-rays: Uses a small amount of radiation to take pictures of bones and soft tissues. They can check for fractures, joint problems, spinal misalignment, and arthritis.
• Electromyogram (EMG) and Nerve Conduction Studies: An EMG assesses the health and function of nerves and muscles. A nerve conduction study measures how quickly an electrical impulse travels through a nerve. These tests can help determine if there is nerve damage and where the nerve is compressed.
• Myelogram: This imaging test examines the relationship between the vertebrae and the vertebrae, the spinal cord, and the outline of the nerves that exit the spinal cord. It can show if something, such as a tumor, bone spur, or herniated disc, is pressing on the spinal cord, nerves, or nerve roots, causing pain, numbness, or weakness.

What are the treatments for cervical spine disorders?

There are both non-surgical and surgical treatments for most cervical spine conditions. The treatment method you choose will depend on the cause of the condition and its severity.

What are nonsurgical treatments?

For neck pain that is not caused by an accident or tumor, your doctor may first recommend less invasive treatments.

• Rest.
• Ice or hot compress.
• Soft cervical collar: A collar provides support to the neck and limits movement.
• Avoiding physical activities that are strenuous or aggravate the disease.
• Physical therapy.
• Medications: Muscle relaxants, painkillers (e.g. paracetamol), and anti-inflammatories (e.g. ibuprofen, naproxen).
• Steroid injections: There are two types of steroid injections that can be considered for neck and/or arm pain. A cervical epidural block is where a steroid injection is injected into the space around the spinal cord (the epidural space). A cervical facet joint block is where a steroid is injected into the capsule of the small facet joint that allows movement of the vertebrae.
• Medical branch block and radiofrequency ablation: This treatment is considered in some cases of chronic neck pain. First, a local anesthetic is injected into the nerve that connects to the facet joint of the spine. If your pain decreases, the next step is to stabilize the pain. This is done by damaging the nerve with a technique called radiofrequency ablation. The pain relief lasts for months. If the nerve regrows, the pain can return.

How do I know if I am suitable for cervical spine surgery?

You may be eligible for surgery if:

• If other treatments do not provide relief.
• If your symptoms related to your spine, arms and/or legs get worse.
• If you are healthy enough to undergo surgery.

What are the surgical options for cervical spine conditions?

There are several commonly used surgical techniques:

Cervical Spinal Decompression Surgery

This is a general term. It includes various procedures used to relieve symptoms caused by pressure (compression) on the spinal cord or nerve roots.

• Cervical diskectomy: The surgeon removes part of the disc to relieve pressure on nearby nerve roots.
• Cervical laminotomy or laminectomy: In these procedures, the surgeon removes a small portion of the bony arch (lamina) of the spinal canal. In a laminotomy, only a small portion of the lamina is removed. In a laminectomy, the entire lamina is removed, along with any bony growths, disc fragments, and thickened ligaments, if necessary. Removing the lamina increases the space in the spinal canal and relieves pressure.
• Cervical foraminotomy or foraminectomy: Both of these procedures are performed to enlarge the openings through which nerve roots exit the spinal cord. Some bone is removed in that area. In a foraminectomy, a large amount of bone is removed.
• Cervical corpectomy: In this surgery, the surgeon removes the vertebral body (the large front part of the vertebra) and the disc to relieve pressure on the spinal cord. Sometimes, the vertebrae are then fused together to stabilize the cervical vertebrae.

Cervical Disk Replacement Surgery

In this, a diseased cervical disc is removed and replaced with an artificial disc. This is often done for cervical disc degeneration.

Cervical Spinal Fusion

This is a surgical procedure that permanently connects one or more cervical vertebrae. This eliminates movement between the vertebrae.

Functional Electrical Stimulation for Spinal Cord Injury

This procedure uses small electrical impulses to activate specific muscles and nerves, restoring function to upper body muscles controlled by the cervical nerves.

Is it possible to have minimally invasive cervical spine surgery?

Talk to your surgeon. In many cases, minimally invasive spine surgery can be performed. Rather than making a large incision in the skin as in traditional open surgery, minimally invasive surgery is performed through one or more small incisions. Because the procedure is performed through small incisions, there is much less damage to the muscles and soft tissues than with a single long incision.

Finally, things to remember (Take-Home Message)

So, now you know a lot about this amazing cervical spine in your neck.

Simply put, your cervical spine is the neck region of your spine. It is made up of the first seven vertebrae (C1-C7). It contains your intervertebral discs, spinal cord, and nerves, muscles, tendons, and ligaments.

This supports the weight of your head, helps you move your head in different directions, and protects your spinal cord. While many conditions can affect this, fortunately, there are many non-surgical and surgical treatment options available to treat these conditions.

If you have any discomfort or pain in your neck, it's best to see a doctor for advice rather than ignoring it. Stay healthy!

` Cervical Spine, Neck Pain, Spine, Spinal Cord, Neurology, Vertebrae