What It Is Cervical Spine (Neck) Anatomy & Disorders
Cervical Spine (Neck): Anatomy & Common Disorders
Cervical Spine Anatomy
The cervical spine is the upper part of the spinal column located in the neck. It supports the head, allows neck movement, and protects the spinal cord.
Main Parts of the Cervical Spine
1. Vertebrae (C1–C7)
The cervical spine has 7 vertebrae.
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C1 (Atlas) – Supports the skull and allows nodding of the head.
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C2 (Axis) – Allows rotation of the head (turning left and right).
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C3–C7 – Provide support, flexibility, and protect nerves.
2. Intervertebral Discs
Soft cushions between vertebrae that absorb shock and allow movement.
3. Spinal Cord
A bundle of nerves that connects the brain to the rest of the body.
4. Nerve Roots
Nerves exit the cervical spine and control shoulders, arms, and hands.
5. Muscles and Ligaments
They support the neck and help with movement and stability.
Functions of the Cervical Spine
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Supports the weight of the head (about 4–5 kg)
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Allows neck movement (flexion, extension, rotation)
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Protects the spinal cord and nerves
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Maintains balance and posture
Common Cervical Spine Disorders
1. Cervical Disc Herniation
A herniated disc occurs when the soft inner part of a disc pushes out and presses on nearby nerves.
Symptoms
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Neck pain
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Arm pain
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Tingling or numbness in fingers
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Weakness in arm muscles
Common levels: C5–C6 and C6–C7.
2. Cervical Spondylosis (Neck Arthritis)
This is age-related wear and tear of cervical discs and joints.
Symptoms
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Chronic neck pain
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Neck stiffness
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Headaches
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Shoulder or arm pain
It is very common after age 40.
3. Cervical Radiculopathy (Pinched Nerve)
This happens when a cervical nerve root is compressed.
Symptoms
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Sharp pain from neck to arm
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Numbness in fingers
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Burning or electric shock-like pain
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Arm weakness
4. Cervical Spinal Stenosis
This condition occurs when the spinal canal narrows and compresses the spinal cord.
Symptoms
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Neck pain
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Balance problems
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Weakness in arms or legs
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Difficulty walking
Common Causes of Cervical Spine Problems
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Poor posture (mobile or computer use)
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Aging and disc degeneration
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Injury or whiplash
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Heavy lifting
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Long hours sitting without neck support
Warning Signs of Serious Cervical Spine Problems
Seek medical help if you have:
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Arm numbness or weakness
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Pain spreading to shoulder or hand
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Loss of balance or coordination
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Severe neck pain after an accident
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Pain lasting more than 3–4 weeks
✅ Simple Summary
| Topic | Explanation |
|---|---|
| Cervical spine | Upper part of spine in the neck |
| Vertebrae | 7 bones (C1–C7) |
| Function | Supports head and protects spinal cord |
| Common disorders | Herniated disc, spondylosis, pinched nerve, stenosis |
