A paraplegic is a person who has paraplegia, a condition in which the legs and sometimes part of the trunk are paralyzed due to damage to the spinal cord. Unlike quadriplegia (also called tetraplegia), which affects all four limbs, paraplegia leaves the arms and hands fully functional. The extent of paralysis depends on exactly where the spinal cord was damaged and whether the injury was complete or partial.
Where the Injury Occurs
The spinal cord is a bundle of nerves running from the brain down through the vertebrae. Different segments control different parts of the body. Paraplegia results from damage to the thoracic, lumbar, or sacral regions, roughly from the upper mid-back downward.
The thoracic nerves (T1 through T12) control the chest muscles, parts of the back, and many internal organs. The lumbar nerves (L1 through L5) control the lower abdomen, buttocks, and upper legs. The sacral nerves (S1 through S5) control the lower legs, feet, and pelvic organs. An injury higher in this range affects more of the body. Someone with a T2 injury, for example, loses sensation and movement from the chest down, while someone with an L4 injury may retain function in their hips and upper legs.
Damage above the thoracic spine, in the cervical (neck) region, causes quadriplegia instead, affecting both arms and legs.
Complete vs. Incomplete Paraplegia
Not all spinal cord injuries are the same severity. Doctors classify them on a five-point scale from A to E. A Grade A injury is “complete,” meaning no motor or sensory signals get past the injury site at all. The person has no feeling and no voluntary movement below the level of damage.
Grades B through D are “incomplete” injuries, where some signals still get through. A person with a Grade B injury can feel sensation below the injury but can’t move voluntarily. Grade C means some muscle movement is preserved, though the muscles are very weak. Grade D means at least half of the key muscles below the injury have meaningful strength. Grade E indicates normal function has returned. These distinctions matter enormously for daily life, because someone with an incomplete injury may eventually walk with assistive devices, while someone with a complete injury typically will not.
Common Causes
Paraplegia can result from traumatic injuries or from diseases that damage the spinal cord. Among traumatic cases, road traffic accidents account for roughly 48% and falls for about 37%, with gunshot wounds and workplace injuries making up the rest. These injuries tend to happen suddenly, often in younger adults.
Non-traumatic causes are more varied. They include spinal stenosis (a narrowing of the spinal canal that compresses the cord), tumors pressing on the spine, blood vessel problems like clots or bleeding near the cord, and inflammatory conditions such as transverse myelitis, where the immune system attacks the spinal cord. Infections and degenerative diseases can also cause paraplegia gradually over weeks or months, rather than in an instant.
How Paraplegia Affects the Body
Paralysis of the legs is the most visible effect, but the spinal cord controls far more than movement. Because the same nerves that move your legs also regulate your bladder, bowel, and sexual organs, paraplegia disrupts all of these functions.
Bladder control is often lost or significantly impaired. Many people with paraplegia use catheters to empty their bladder on a schedule. Bowel function slows dramatically: research shows that food takes an average of nearly four days to pass through the digestive system after a spinal cord injury, compared to under two days in people without one. This means constipation is a constant management challenge, and most people need a structured bowel care routine. Sexual function is also affected, though the specifics depend on the injury level and completeness. Many people with paraplegia can still have sexual relationships, but sensation, arousal, and fertility may all be altered.
Skin breakdown is another persistent concern. Without sensation, you can’t feel the pressure that builds from sitting in one position. Pressure sores can develop quickly and become serious infections if not prevented through regular repositioning and skin checks.
Autonomic Dysreflexia
People with injuries above roughly T6 face a potentially dangerous complication called autonomic dysreflexia. This happens when something below the injury irritates the body, most commonly a full bladder (responsible for about 85% of episodes) or constipation. Because the brain can’t receive and regulate signals properly below the injury, the nervous system overreacts, causing a sudden spike in blood pressure.
The warning signs are a severe, pounding headache, flushing of the face, sweating, and a sense of anxiety. It requires immediate action: sitting upright, loosening any tight clothing, and finding and removing the trigger. Left untreated, the blood pressure spike can cause a stroke or seizure. People with paraplegia at higher injury levels learn to recognize and respond to these episodes as part of their ongoing self-care.
Life Expectancy
Paraplegia reduces life expectancy compared to the general population, but less so than many people assume. A 25-year-old with paraplegia can expect roughly 88% of the life expectancy of someone without a spinal cord injury, according to research by Middleton and colleagues. That figure drops for higher and more complete injuries: the same age group with high-level quadriplegia retains about 69% of normal life expectancy.
Studies tracking long-term survival found that people with paraplegia live an average of 31 to 34 years after their injury, depending on the level. This is significantly longer than the 17 to 25 years seen in quadriplegia. The main threats to longevity are respiratory infections, urinary tract complications, and cardiovascular disease, all of which are manageable with good ongoing care.
Rehabilitation and Mobility
Rehabilitation after a spinal cord injury is intensive and typically begins in the hospital. The goals are to maximize whatever function remains, build upper body strength, learn wheelchair skills, and develop routines for bladder and bowel management. For people with incomplete injuries, gait training may be part of the program.
Robotic exoskeletons have emerged as a rehabilitation tool. These are wearable devices that support the legs and use motors to replicate a walking motion. A meta-analysis of 111 patients using devices like ReWalk, Ekso, and Indego found that 76% were able to walk without additional assistance while wearing the device, and 38% experienced reduced spasticity (involuntary muscle tightness). Six exoskeletons currently have FDA approval, though most are used in specialized rehabilitation centers rather than at home. Research continues on making them practical for everyday use.
Functional electrical stimulation, which uses small electrical currents to activate paralyzed muscles, is another tool that improves cardiovascular fitness and muscle tone during rehabilitation. For most people with complete paraplegia, though, a manual wheelchair remains the primary means of getting around, and learning to use one efficiently is a core part of rehab.
Adapting Home and Daily Life
People with paraplegia retain full use of their arms, which makes independent living realistic for many. The biggest barriers tend to be physical environments designed for people who walk. A study of 482 people with spinal cord injuries found that the most common home modification was a wheelchair-accessible shower (63% of participants), followed by grab bars next to the toilet (57%) and an entry ramp (45%).
Kitchen accessibility remains a significant gap. Adjustable-height countertops and cabinets were the modifications with the highest unmet need: roughly 75 to 79% of people who needed them didn’t have them. Standard kitchens place counters, sinks, and storage at heights designed for standing, which forces wheelchair users to work around obstacles or rely on others for tasks they could otherwise do independently.
Beyond the home, driving is possible with hand controls that replace foot pedals, and many people with paraplegia return to work, sports, and travel. Wheelchair basketball, rugby, tennis, and racing all have thriving competitive scenes. The functional independence that comes from having full arm strength sets paraplegia apart from higher-level injuries and means that, with the right adaptations, most of daily life remains within reach.