Types and Levels of Spinal Cord Injuries

Attorney
Attorney

Each spinal cord injury is unique. Some cause loss of motor and sensory function, while others may affect only specific body systems. The way an injury impacts someone depends largely on where it happens along the spinal cord and how severe the damage is.

At THE702FIRM Injury Attorneys, we work with individuals in Nevada whose lives have changed due to spinal cord injuries. These injuries can be life-altering. Understanding the types and levels of spinal cord injuries helps families prepare for what comes next: physically, medically, and legally. If you or someone you care about has suffered such an injury, our spinal cord injury attorney is available to discuss your legal options.

This guide breaks down the different levels of spinal cord injuries, explaining their impact on mobility and organ control, and how the classification of spinal cord injuries can inform treatment and planning.

What Is a Spinal Cord Injury?

Doctor pointing at a spine model with a pen, explaining spinal injury or back pain treatmentA spinal cord injury (SCI) happens when the spinal cord or surrounding spinal cord tissue is damaged. The spinal cord is a bundle of nerves that runs through the spinal canal. It carries messages from the brain to the rest of the body and back. When this pathway is disrupted, it can cause changes in motor function, sensory function, and control over the body’s organs.

Injuries may occur from significant trauma, such as a car accident or a fall. Even minor trauma in the wrong place can cause long-term damage. The spinal cord does not regenerate in the same way that other parts of the body do, so damage is often permanent.

There are two major types of injuries: complete and incomplete spinal cord injury. A complete spinal cord injury means all feeling and movement are lost below the injury site. An incomplete injury means some signals still pass through, and there may be some preserved function.

Other terms like secondary injury, which refers to swelling or bleeding after the initial injury, also affect recovery. Treatment often depends on the injury level, location, and how the spinal nerves and surrounding structures are affected.

Classification of Spinal Cord Injuries

Spinal cord injuries are grouped based on how much damage occurred and where it happened on the spine. This classification helps medical providers, rehabilitation teams, and legal advocates understand the impact of the injury and plan effective care.

Injury Type (Severity of Damage)

  • Complete Spinal Cord Injury: Total loss of motor and sensory function below the injury level. No communication occurs between the brain and the body parts below the damaged area.
  • Incomplete Spinal Cord Injury: Partial loss of function. Some nerve signals still travel past the injury, allowing for limited movement or feeling, depending on the damage.
  • Anterior Cord Syndrome: An incomplete injury where motor function is more severely affected than sensation. It is usually caused by reduced blood flow to the front part of the spinal cord.
  • Cauda Equina Injuries: Damage to the nerve roots at the end of the spinal cord. This often leads to issues with bowel and bladder function, leg movement, and sexual function.

Injury Level (Location Along the Spine)

  • Cervical Spine Injuries: Located in the neck region (C1–C8). Affects arms, hands, diaphragm, and in severe cases, full-body movement and breathing.
  • Thoracic Spine Injuries: Mid-back region (T1–T12). Impacts abdominal muscles, chest, and lower body. Often results in paraplegia while leaving arm function intact.
  • Lumbar Spine Injuries: Lower back region (L1–L5). Affects the hips, legs, and parts of the bladder and bowel. May preserve upper body control.
  • Sacral Spine Injuries: Bottom of the spine (S1–S5). Controls pelvic organs, bladder, and lower limbs. Can lead to difficulties with bowel and bladder control and sexual function.

Cervical Spinal Cord Injuries

The cervical spinal cord is responsible for sending messages between the brain and the upper body. It controls movement and sensation in the head, neck, shoulders, arms, and hands. These nerves also help regulate breathing, heart rate, and swallowing.

Injuries in this area are often the most serious. Because the cervical region sits at the top of the spinal column, damage here can affect most of the body. Breathing, movement, bladder control, and even the ability to speak can be impacted.