A fractured spine is a break in one or more of the bones (vertebrae) that make up your spinal column. It ranges from a small crack in a single vertebra to a severe break that shifts bones out of alignment and threatens the spinal cord. Around 1.5 million vertebral compression fractures alone occur every year in the United States, making this one of the most common bone injuries in older adults, though younger people can fracture their spine too in high-energy accidents.
Types of Spinal Fractures
Not all spinal fractures are the same. The type depends on which part of the vertebra breaks and what force caused it. A healthcare provider will also classify the fracture as stable or unstable, depending on whether the bones have shifted out of their normal alignment. Unstable fractures carry a higher risk of spinal cord damage and typically require more aggressive treatment.
- Compression fractures are the most common type. The front of a vertebra collapses or cracks while the back stays intact. These can happen suddenly from a fall or develop gradually when osteoporosis weakens the bone over time.
- Burst fractures happen when a strong downward force crushes a vertebra in multiple directions, pushing bone fragments outward. Unlike compression fractures, burst fractures affect more of the vertebra’s structure and can send fragments toward the spinal canal.
- Chance (flexion-distraction) fractures occur when vertebrae are pulled apart rather than compressed. A classic example is a seatbelt injury in a car crash, where the upper body snaps forward while the pelvis stays anchored, tearing through the ligaments and bone at the back of the spine.
- Fracture-dislocations are the most severe type. A combination of rotation, shearing, and compression forces breaks bone and displaces vertebrae from their normal position. These almost always damage the spinal cord or surrounding nerves.
Fractures in the small bony projections off the main vertebra (the spinous or transverse processes) are a separate category. Because these don’t affect the stability of the spine itself, they’re generally minor injuries that heal with rest over several weeks.
What Causes a Fractured Spine
The two main paths to a spinal fracture are high-energy trauma and weakened bone. In younger adults (average age around 35 in study populations), the cause is almost always a forceful event: a car or motorcycle crash, a fall from a significant height, or a sports collision. In older adults (average age around 70), the bone has often already been thinned by osteoporosis, so even a fall from standing height or sitting down too hard can fracture a vertebra.
The difference matters more than you might think. Osteoporotic fractures that happen spontaneously or from minimal force can often be treated without surgery. Traumatic fractures in osteoporotic bone, however, frequently need surgical stabilization because the weakened bone makes it harder for implants to anchor properly. Infections, tumors, and other diseases that erode the vertebral body can also cause the spine to gradually collapse into a compression or burst-type fracture.
Women are affected at nearly twice the rate of men. Population studies show an annual incidence of about 10.7 per 1,000 women compared to 5.7 per 1,000 men, largely driven by the higher rates of osteoporosis after menopause.
Symptoms to Watch For
The hallmark symptom of a spinal fracture is sudden back pain at the site of the break. With compression fractures from osteoporosis, the pain sometimes develops gradually and may be mistaken for general back pain or muscle strain. In traumatic fractures, the pain is immediate and often severe, especially with movement.
Pain alone doesn’t tell the full story. The more critical concern is whether the spinal cord or nearby nerves are involved. Warning signs of nerve damage include:
- Numbness, tingling, or loss of sensation in the arms, legs, or trunk
- Weakness or loss of movement in any part of the body
- Loss of bladder or bowel control
- Difficulty breathing or coughing
- Changes in sexual function
- Muscle spasms or exaggerated reflexes
If the injury is in the upper spine (the neck region), it can affect all four limbs, the trunk, and pelvic organs. If it’s lower, in the mid or low back, it typically affects the legs and lower body while sparing the arms. Any sign of numbness, weakness, or loss of bladder control after a back injury needs emergency evaluation.
How a Fractured Spine Is Diagnosed
Standard X-rays are the first step and can show obvious breaks where the bone’s outer surface is disrupted or the vertebra has lost height. If the X-ray shows a fracture, a CT scan provides a detailed three-dimensional view to assess how many fragments exist, whether the spinal canal is compromised, and whether the fracture is stable or unstable.
MRI plays a different role. It’s especially useful for determining whether a fracture is new or old, because fresh fractures show swelling in the bone marrow that older, healed fractures don’t. This distinction matters because an older fracture that was never noticed doesn’t need the same treatment as a recent one. MRI also helps detect whether a fracture was caused by a tumor rather than trauma or osteoporosis. In cases where MRI results are unclear or the patient can’t have an MRI, specialized nuclear medicine scans can help make that distinction.
Treatment Without Surgery
Many stable spinal fractures heal without an operation. The goal of nonsurgical treatment is to immobilize the fracture long enough for bone healing while getting you moving as soon as safely possible. This typically starts with a short period of bed rest, followed by gradual increases in activity.
A rigid brace (often called a TLSO, which covers the torso from mid-chest to the hips) is commonly prescribed to limit spinal movement during healing. Interestingly, multiple randomized trials comparing bracing to no bracing for burst fractures found no difference in outcomes. An international panel of spine specialists reached 100% agreement that there is no clinical evidence bracing improves results for thoracolumbar fractures. Still, many providers continue to prescribe braces because they may help with pain and serve as a reminder to avoid bending and twisting.
Physical therapy focusing on back range of motion and strengthening typically begins around 8 to 12 weeks after injury, with serial imaging over three months to confirm the fracture is healing in proper alignment.
When Surgery Is Needed
Surgery becomes necessary when the fracture is unstable, when bone fragments are pressing on the spinal cord, or when pain persists despite conservative care. The type of surgery depends on the fracture.
For painful compression fractures, particularly those caused by osteoporosis, two minimally invasive procedures are commonly used. Vertebroplasty involves injecting medical-grade bone cement directly into the collapsed vertebra to stabilize it and relieve pain. Kyphoplasty is a modification where a small balloon is first inflated inside the vertebra to restore some of its lost height before cement is injected. Both procedures are done through a small needle puncture in the skin and are the most common surgical option for osteoporotic compression fractures. They’re also used for fractures caused by cancer that has spread to the spine.
For more severe injuries like burst fractures, fracture-dislocations, or any fracture compressing the spinal cord, spinal fusion is typically required. This involves connecting two or more vertebrae with screws and rods so they heal into a single solid segment. Before fusion became routine, decompression surgery to relieve pressure on the spinal cord was often done as a standalone procedure, but today these are frequently combined.
Recovery Timelines
Recovery depends heavily on the fracture type, whether surgery was needed, and whether nerves were damaged. For the most common scenario, a compression fracture treated without surgery, most people can return to full activity after about three months, provided imaging shows stable alignment and pain has resolved.
Burst fractures take longer. For those managed without surgery, the typical recommendation is to wait at least six months after full recovery before resuming physical activity, and nine months before returning to sports. If the physical activity itself caused the fracture, the timeline may be extended further.
After spinal fusion surgery for a more serious fracture, the general guideline is three months before low-impact activities and six months before contact sports or high-risk physical work. For direct surgical repair of certain fracture types, over 80% of patients in one study returned to their pre-injury activity level within an average of seven months.
These timelines assume the spinal cord was not injured. When spinal cord damage occurs, recovery is a fundamentally different and longer process, often involving months of rehabilitation with outcomes that vary widely based on the severity and location of the injury.
Long-Term Risks After a Spinal Fracture
The most common long-term complication is progressive kyphosis, the forward rounding of the upper back. When a vertebra loses height from a compression or burst fracture, it creates a wedge shape that tilts the spine forward. Over time, this can worsen as the vertebra continues to collapse, especially if the underlying bone quality is poor. After one year, studies show measurable worsening of spinal alignment alongside continued vertebral collapse in some patients.
Kyphotic deformity isn’t just cosmetic. Patients with significant kyphosis after a spinal fracture score meaningfully worse on measures of walking ability and disability compared to those whose spines maintained alignment. The forward shift changes how your entire spine bears weight, which can cause chronic pain in areas above and below the original fracture.
Perhaps the most important long-term risk is the chance of another fracture. Having one vertebral fracture increases the likelihood of future fractures, particularly if the underlying cause (usually osteoporosis) isn’t treated. This is why bone density testing and treatment to strengthen bone are critical parts of long-term management after an osteoporotic spinal fracture.