What Are the Different Types of Spinal Cord Injuries?

Somewhere in your medical records, or a loved one’s, there’s a line that at first looks like a typo: C6, AIS B.

That’s a spinal cord injury diagnosis. It tells doctors where the cord was damaged, how much function survived, and roughly what decades of care will look like.

That shorthand shapes your treatment and, if someone else caused the injury, what your claim is worth. Here’s how doctors classify the types of spinal cord injuries, and how a spinal cord injury attorney in Etna turns that classification into a damages claim.

Complete vs. Incomplete: The First Line Doctors Draw

The difference between a complete vs. an incomplete spinal cord injury comes down to whether any nerve signals still get past the damage. Oddly, doctors check for this at the bottom of the spine, in the lowest sacral segments (S4-S5). If no feeling or muscle control registers there, the injury is complete, even when the damage is up in the neck.

An incomplete injury means some signals still get through, so some feeling, movement, or both survive. Incomplete doesn’t mean minor, though. According to the latest national figures, incomplete tetraplegia accounts for nearly half of all diagnoses at hospital discharge. Two patterns come up often:

• Central cord syndrome. The most common incomplete injury, often in older adults with a narrowed spinal canal after a fall that snaps the head back. The arms and hands suffer more damage than the legs.
• Anterior cord syndrome. Damage to the front of the cord knocks out movement, along with pain and temperature sensation, while touch and position sense often survive.

Tetraplegia vs. Paraplegia: Why the Level Matters

The second part of the diagnosis is the neurological level, the lowest point where the cord still works normally. The higher the injury, the more of the body it affects. Standard spinal cord trauma classification groups injuries by region:

• Cervical (neck, C1-C8). These injuries cause tetraplegia, also called quadriplegia. Cervical spinal cord injury symptoms can include weakness or paralysis in all four limbs, numbness, and loss of bladder and bowel control. According to the National Institute of Neurological Disorders and Stroke, damage from C1 through C4 can stop a person’s breathing.
• Thoracic (upper and mid-back, T1-T12). Arm function is spared, which is the line between tetraplegia and paraplegia. The effects of a thoracic spine can include weak trunk muscles, poor balance, paralyzed legs, and loss of bladder, bowel and sexual Neck and upper-back injuries also carry the risk of autonomic dysreflexia, a sudden, potentially life-threatening spike in blood pressure.
• Lumbar and sacral (low back and pelvis, L1-S5). These injuries mainly affect the hips, legs and feet, plus bladder, bowel and sexual function.

The cord itself usually ends around the first lumbar vertebra, where a bundle of nerve roots called the cauda equina takes over. Cauda equina syndrome can cause saddle-area numbness, leg weakness, and loss of bladder and bowel control. It’s a surgical emergency, and outcomes are better when surgery happens within 48 hours.

Reading Your ASIA Impairment Scale Grade

A standardized exam of sensation and key muscles on both sides of the body produces a letter on the American Spinal Injury Association (ASIA) Impairment Scale (AIS), the one report card where an ‘A’ is the grade nobody wants. The ASIA impairment scale grades mean:

• A, complete. No feeling or movement in the lowest sacral segments.
• B, sensory incomplete. Some feeling below the injury, but no meaningful movement.
• C, motor incomplete. Some movement, but most key muscles below the injury can’t move against gravity.
• D, motor incomplete. At least half of those muscles can move against gravity.
• E, normal. Feeling and movement test normal after earlier deficits.

So C6, AIS B, as referenced above, means ‘a neck injury with some sensation below it but little or no voluntary movement.’

That first grade isn’t always the last word. Swelling and spinal shock can mask function early, so guidelines recommend waiting about 72 hours before using the exam to predict recovery.

How Your Diagnosis Shapes a Wyoming Injury Claim

Insurance adjusters read the same chart you do.

In a claim, the level and grade anchor the life care plan, a projection of every surgery, therapy session, wheelchair, and hour of attendant care someone will need. The differences can be enormous. For someone injured at age 25, the same national data puts estimated lifetime costs at about $6.4 million for high tetraplegia (C1-C4, grades A through C) and about $2.1 million for an AIS D injury. The injury type drives damages for home and vehicle modifications, equipment, long-term care and lost earning capacity. For many Star Valley families, the claim also has to cover long drives to specialized rehab, since Wyoming has no federally funded Spinal Cord Injury Model System center.

Wyoming’s constitution bars any law capping damages for an injury. This means a claim can account for the full cost of care. Timing still matters. Settling before an incomplete injury’s prognosis becomes clear can mean pricing a lifetime of care merely on a guess.

When Your Chart Needs a Translator

A spinal cord injury diagnosis squeezes a lifetime of consequences into a number and a letter. Edwards Law Office, P.C. helps injured Wyomingites turn that shorthand into a full accounting of what they’ve lost and what they’ll need. With more than 20 years of practice in Wyoming, our firm builds each claim around your medical records, your prognosis, and the life you lived before.

If someone else’s negligence caused your injury, reach out to our firm for a free consultation. The chart tells part of the story, and we’ll help you tell the rest.