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Traumatic Spine Fractures

Traumatic Spine Fractures

A spine fracture is a serious injury. Young men are the most frequent victims of high-energy trauma from falls and traffic accidents. Neurological injury occurs in 16 -25% high-energy traumas. Most spine fractures occur in the mid or low back or at the juncture between the two and create a substantial risk of spinal cord injury and paralysis.

Many traumatic spine fractures can be treated with conservative measure including 4-12 weeks of immobilization and bracing. However, major fractures that cause instability, and those that involve the spinal cord and/or nerve roots will require prompt treatment to reduce the risk long-term disability.

Fractures are categorized by their pattern. There are three categories of traumatic spine fractures:

Flexion – Fracture Pattern

Compression fractures

Compression fractures are the most common type. In a compression fracture the trauma causes the injured vertebrae to collapse causing severe and disabling pain.  Compression fractures involve a breakage of the front of a vertebra but not the back. These fractures tend to be stable meaning the bones will not move out of place. Most Flexion Fractures can be treated without surgery when the fracture is stable.

Burst Fractures

When the trauma is great enough it can burst the bone sending bone fragments in all directions and can push into the spinal column. Burst fractures are frequently unstable and increase the risk of long-term neurological damage. Unstable burst fractures are treated with surgical decompression of the spine and stabilization of the fracture.

Extension – Fracture Pattern

Flexion-Distraction Fractures

Flexion-Distraction Fractures are often called “Chance Fractures” or “Seat-belt fractures”. They occur when traumatic forces pull the vertebrae apart. This type is often caused by a head – on collision where the chest is thrown forward, and the lower body is held stable by a seat belt. The trauma fractures the bone but does not injure the ligaments. Severe back pain is the main symptom. This pattern can damage internal organs and cause a brain injury.

If there is no damage to the ligaments, vertebral discs or spinal cord, extension fractures can be treated nonsurgical with bracing or casting for 3 months followed by physical therapy. Surgery will be necessary when the back ligaments fail and the fracture pushes through the vertebral discs, and the spine is unstable.

Rotation Fracture Pattern

The most common rotation pattern is found in fracture – dislocation where the vertebra is displaced or dislocated and compresses the spinal cord. This is a very unstable injury that causes severe pain and when the spinal cord is involved, may produce numbness, tingling, weakness and even bowel and bladder dysfunction. These fractures require stabilization with posterior spinal fusion and vertebrae realignment.

Symptoms of a spinal fracture

Symptoms vary depending on the location and type of fracture. The first symptom is pain and worsening of pain with movement. However, when the spinal cord is involved symptoms include numbness, tingling, weakness, bowel and bladder dysfunction, and paralysis.

Diagnosis

Emergency stabilization at the scene of an accident is necessary before transfer to the ER. Arriving at the ER, the trauma specialist will assess the extent of injuries, including breathing ability. The patient will be examined head to toe. X-rays will reveal the type and severity of the fracture. A CT scan with or without contrast will provide 3-D views to reveal all bone damage, and diagnose soft tissue injuries, and bleeding. An MRI with contrast will provide a clear view of damage to ligaments discs and the spinal.  The trauma doctor will conduct a neurological exam.

Treatment

Initially treatment will the focus on pain management and stabilization to prevent additional injuries. When there are other injuries, they will also be treated. When the fracture only affects the vertebrae, and the bones can fit back together, nonsurgical treatment with a brace or cast will be sufficient. Depending on the fracture pattern and stability, bracing and possibly surgery will be needed. 8-12 weeks of bracing may be required. Instrumentation and fusion are surgical procedures to treat unstable fractures.  Minimally invasive surgical procedures will be used to treat compression fractures. Recovery after surgery will require a back brace for 2-3 months. and 3-6 weeks of physical therapy.