A cervical fracture is a break in one or more of the seven vertebrae (labeled C1 through C7) that make up the neck portion of your spine. Often called a “broken neck,” this injury ranges from a small crack in one bone to a catastrophic break that damages the spinal cord. The severity depends on which vertebra breaks, how the bone fragments shift, and whether nearby nerves or the spinal cord are involved.
The Seven Cervical Vertebrae
Your cervical spine is a stack of seven small bones that support the weight of your skull and allow your head and neck to move. It is the most mobile section of the entire spinal column, which also makes it more vulnerable to injury.
The top two vertebrae are unique. C1, called the atlas, sits directly under the skull and handles most of the head’s up-and-down nodding motion. C2, called the axis, is the primary weight-bearing bone of the upper neck and contributes more to rotational movement, like turning your head side to side. The remaining five vertebrae, C3 through C7, form the lower cervical spine and have small bony projections on their sides that help keep each vertebra aligned with its neighbors.
Running through a canal formed by these vertebrae is the spinal cord. Because the bones and the cord sit so close together, a fracture that shifts bone fragments inward can compress or sever the cord, potentially causing paralysis.
Common Types of Cervical Fractures
Cervical fractures are categorized by which vertebra breaks and the pattern of the break:
- Jefferson fracture: A burst-type break of the C1 ring, often in multiple places. This typically results from a force driving straight down on the top of the head, like a diving accident.
- Hangman’s fracture: A break through both sides of the C2 vertebra’s arch. Despite the name, this injury today is most often caused by car crashes or falls rather than hanging.
- Odontoid (dens) fracture: A break through the peg-shaped projection on top of C2 that allows your head to rotate. These are classified into three types: Type I is a chip off the tip, Type II breaks through the base of the peg (the most common and often the most troublesome to heal), and Type III extends down into the body of C2 itself.
- Subaxial fractures (C3 through C7): Breaks in the lower cervical vertebrae. These can involve the vertebral body, the bony arch at the back, or the small projections on the sides, and they vary widely in stability.
What Causes a Cervical Fracture
Motor vehicle collisions are the leading cause. In one large epidemiological study, car rollovers alone accounted for nearly 47% of cervical spine injuries, followed by car-to-car crashes at about 25% and car-to-motorcycle collisions at roughly 15%. Falls are the second most common cause overall and become especially significant in older adults, whose bones are more brittle.
Other mechanisms include sports injuries (diving into shallow water, football tackles, skiing accidents), bicycle crashes, and direct blows to the head or neck. Any force that violently bends, twists, or compresses the neck can fracture a cervical vertebra.
Symptoms and Warning Signs
The most obvious symptom is severe neck pain, especially right after an impact. But pain alone doesn’t tell the full story. A fracture can be “stable,” meaning the bone cracked without shifting and the spinal cord is unharmed, or “unstable,” meaning the bone fragments have moved and the cord or nerve roots are at risk.
When nerve roots are affected, you may notice numbness, tingling, or weakness in a specific area of the arm or hand corresponding to the damaged level. When the spinal cord itself is involved, the effects are broader and more serious:
- Central cord syndrome (the most common incomplete spinal cord injury) causes more weakness in the arms than the legs and usually follows a hyperextension injury.
- Anterior cord syndrome results in loss of movement and the ability to feel pain or temperature below the injury, while the sense of vibration and position may remain intact.
- Brown-Séquard syndrome occurs when one side of the cord is damaged, causing weakness on the same side as the injury and loss of pain and temperature sensation on the opposite side.
Some fractures produce surprisingly few symptoms at first, particularly in people who are intoxicated, distracted by other painful injuries, or have an altered level of consciousness. This is why emergency teams treat any significant trauma to the head or neck as a potential cervical fracture until imaging proves otherwise.
How a Cervical Fracture Is Diagnosed
In the emergency department, doctors use clinical screening rules to decide whether imaging is needed. The two most widely used are the NEXUS criteria and the Canadian C-Spine Rule. Under NEXUS, imaging can be skipped only if all five conditions are met: no tenderness along the back of the neck, no intoxication, a normal level of alertness, no neurological deficits, and no painful distracting injuries. The Canadian C-Spine Rule flags anyone 65 or older, anyone injured by a dangerous mechanism, or anyone with tingling in the arms or legs as needing imaging right away.
CT scanning is the primary tool for detecting bone fractures. It identifies cervical vertebral fractures with about 85% sensitivity and 96% specificity, and it is particularly strong at ruling out fractures, with a negative predictive value above 95% across all seven vertebrae. MRI is added when doctors suspect soft tissue damage: torn ligaments, disc injuries, spinal cord swelling, or bleeding. CT catches only about 6% of ligament injuries on its own, so MRI fills a critical gap when the bones look intact but the patient’s symptoms suggest something more.
Emergency Stabilization
If you or someone around you may have a cervical fracture, keeping the neck still is the single most important first step. Emergency medical teams follow a protocol called “triple immobilization,” which combines a semi-rigid cervical collar, foam head blocks on either side of the head, and tape or straps securing everything to a rigid board. The goal is to prevent any movement that could shift bone fragments into the spinal cord.
This is why bystanders are advised never to move a person with a suspected neck injury unless they are in immediate danger, such as from fire or drowning. Even small, well-intentioned repositioning can worsen an unstable fracture.
Treatment Without Surgery
Stable fractures, meaning the bone is cracked but aligned and the ligaments are intact, can often heal with external immobilization alone. The type of brace depends on the fracture’s location and severity.
Semirigid cervical collars (such as the Aspen, Miami, or Malibu style) are used for stable fractures where only moderate restriction of movement is needed. They keep the neck from bending or rotating too far while the bone knits back together. For unstable fractures that don’t require surgery, a halo vest provides much more rigid control. This device uses a ring fixed to the skull with small pins, connected by bars to a vest worn over the torso. It restricts nearly all neck movement. Halo vest treatment typically lasts between 6 weeks and 4 months, depending on how quickly the bone heals.
When Surgery Is Needed
Surgery becomes necessary when a fracture is unstable, when bone fragments are compressing the spinal cord or nerve roots, or when the spine cannot maintain proper alignment on its own. Infection and tumors that weaken the vertebrae are also accepted reasons for surgical intervention.
The most common approach is spinal fusion, which permanently joins two or more vertebrae using bone grafts, metal plates, and screws. This can be done from the front of the neck (anterior approach) or from the back (posterior approach), depending on where the damage is. Fusion eliminates movement at the joined segment, so surgeons aim to fuse as few levels as possible. For patients with nerve compression causing persistent arm pain or weakness, surgery may be recommended after conservative measures have been tried without success.
Recovery and Rehabilitation
Bone healing in the cervical spine generally takes 6 to 12 weeks for straightforward fractures, though more complex injuries or those treated with a halo vest can take up to 4 months before the brace comes off. Surgical fusion adds its own healing timeline, as the grafted bone needs to grow solidly into the surrounding vertebrae.
Physical therapy typically moves through three stages. In the early phase, while pain is still significant, the focus is on positioning and gentle supported movements that take pressure off the injured area. As pain decreases, slow stretching exercises improve flexibility and reduce the risk of re-injury. The final stage builds strength in the muscles that support the neck, training them to hold the spine in proper alignment during daily activities. How long rehabilitation takes varies widely. A simple compression fracture in a young, healthy person may need only a few weeks of therapy after the brace comes off, while a fracture with spinal cord involvement can require months or even years of ongoing rehabilitation.
Stiffness and reduced range of motion are common after any cervical fracture, even one that heals well. Fused segments permanently lose their independent movement, so adjacent vertebrae compensate by moving slightly more, which can contribute to wear over time. Staying consistent with strengthening exercises is the most effective way to protect those neighboring segments and maintain long-term neck function.