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The journal of spinal cord medicine·2026·RCT
Spinal Cord Injury
Damage to the spinal cord that disrupts communication between the brain and body
ICD-10: S14.109A · systemic condition
A spinal cord injury (SCI) occurs when trauma or disease damages the spinal cord, disrupting the nerve signals that control movement, sensation, and bodily functions below the injury level. SCIs are classified as complete (no movement or sensation below the injury) or incomplete (some function preserved). Approximately 17,000 new spinal cord injuries occur in the United States each year, most often from motor vehicle accidents, falls, sports injuries, and acts of violence.
Symptoms
- Loss of movement (paralysis) in the arms, hands, trunk, or legs depending on injury level
- Loss of or altered sensation, including the ability to feel heat, cold, and touch
- Loss of bowel or bladder control
- Exaggerated reflex activity or spasms (spasticity)
- Changes in sexual function or fertility
- Pain or intense stinging sensations caused by nerve fiber damage
- Difficulty breathing, coughing, or clearing secretions (cervical injuries)
Causes & Risk Factors
- Motor vehicle accidents — the leading cause of SCI
- Falls — the leading cause for adults over 65
- Violence such as gunshot wounds or stab injuries
- Sports and recreation injuries, especially diving and contact sports
- Medical or surgical complications (rare)
- Diseases such as tumors, infections, or inflammation of the spinal cord
- Vascular conditions reducing blood supply to the cord
Imaging Findings
Imaging studies are commonly used to identify findings associated with this condition. Results vary by individual; a qualified spine specialist interprets findings in the context of a full clinical evaluation.
MRI
- MRI is the primary imaging modality for acute SCI: T2 hyperintensity within the cord at the injury level indicates oedema or haemorrhage; extent of cord signal change correlates with neurological prognosis
- BASIC score (Brain and Spinal Injury Center score) on MRI T2 sequences grades injury severity and predicts motor recovery — a validated prognostic tool used in acute SCI assessment
- Cord compression by disc, haematoma, or fracture fragment is evaluated for surgical planning; the presence and degree of cord compression affects timing and approach to decompression; results vary by individual and require specialist interpretation
CT Scan
- CT is the primary acute imaging modality for bony injury assessment: fractures, dislocations, facet joint injuries, and canal compromise are rapidly characterised
- CT with reconstruction in the sagittal and coronal planes guides surgical planning for stabilisation; instability patterns determine the surgical approach
- CT angiography may be indicated when vertebral artery injury is suspected, particularly in cervical fracture-dislocations
X-Ray
- Initial trauma series (AP and lateral) screens for obvious fracture-dislocation but is insufficient alone — CT is required for complete assessment in suspected SCI
- Post-operative and follow-up plain films monitor alignment and instrumentation position
- Dynamic films (flexion-extension) may later assess fusion and stability, typically not in the acute phase
Who Is Commonly Affected
The following patterns are commonly associated with this condition based on published population studies. Individual presentation varies; these figures are informational only.
Peak Age Range
Bimodal distribution: young adults aged 16-30 years (predominantly traumatic causes: motor vehicle collisions, falls, sports) and adults over 65 (predominantly falls and degenerative cervical myelopathy)
Gender Distribution
Traumatic SCI is approximately 4 times more common in males than females; non-traumatic SCI has a more equal sex distribution
Estimated Prevalence
Global incidence of traumatic SCI estimated at 13-52 cases per million population annually; approximately 300,000-400,000 people living with SCI in the United States; based on published population studies, individual presentation varies
Treatment Options
Conservative
- Immobilization and stabilization immediately following injury
- High-dose methylprednisolone (steroids) within 8 hours of injury in selected cases
- Inpatient rehabilitation: physical, occupational, and speech therapy
- Assistive technology: wheelchairs, communication devices, functional electrical stimulation
- Bowel and bladder management programs
- Pain management including medications and nerve blocks
- Psychological counseling and peer support programs
Surgical
- Emergency spinal decompression to relieve pressure on the cord
- Spinal stabilization with rods, screws, or plates to realign and immobilize the spine
- Tendon transfer surgery to restore upper limb function in incomplete cervical injuries
- Intrathecal baclofen pump implantation for severe spasticity management
When to see a spine specialist
Any suspected spinal cord injury is a medical emergency. Call 911 immediately and avoid moving the person. After initial stabilization, a spine specialist and rehabilitation team should be involved in care planning as soon as possible. Even with incomplete injuries, early, aggressive rehabilitation significantly improves outcomes.
Specialists Who Treat Spinal Cord Injury
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Questions to Ask Your Doctor
Bring these questions to your next appointment about spinal cord injury.
- 1
What is the ASIA Impairment Scale classification of my injury — complete or incomplete — and what does that mean for expected neurological recovery?
- 2
Which level of the cord is injured (cervical, thoracic, lumbar), and how does that affect which functions are most likely to recover and which require long-term management?
- 3
What is the recommended timing for surgical decompression in my case — and is there still a window where early surgery could improve neurological outcomes?
- 4
What rehabilitation program has the strongest evidence for improving function at my level and completeness of injury?
- 5
What secondary complications (pressure injuries, autonomic dysreflexia, neurogenic bladder, chronic pain) should I be actively monitoring for, and how are those typically managed?
Clinical Evidence
Key Research
- L3Methodology and Epidemiologic Data of the Second International Spinal Cord Injury (InSCI) Community Survey (2025)
- L3Profile of persons with traumatic spinal cord injury and factors of length of stay in rehabilitation (2025)
- L4Surgical Timing After Spinal Cord Injury: A Narrative Review of Current Evidence and Perspectives (2025)
- L1Systematic Review of MRI Scoring Systems to Predict Outcome in Cervical Spinal Cord Injury (2023)
Frequently Asked Questions
What is the difference between a complete and incomplete spinal cord injury?
A complete SCI means there is no motor or sensory function below the injury level — the cord communication is fully severed or severely disrupted. An incomplete SCI means some signals still pass through — the person retains partial movement, sensation, or both below the injury. Incomplete injuries have a broader range of recovery potential. The distinction is determined by standardized neurological testing, not by imaging alone.
Can spinal cord injuries recover?
Recovery depends on the injury level, the completeness of the injury, and how quickly treatment begins. Incomplete injuries often show meaningful functional recovery, especially with intensive rehabilitation. Complete injuries rarely result in full recovery, but most patients regain some function over time. Research into stem cells, epidural stimulation, and regenerative therapies is ongoing and showing early promise.
What level of spinal cord injury causes paralysis?
Injuries at the cervical (neck) level typically cause quadriplegia (paralysis of all four limbs and sometimes the trunk and breathing muscles). Injuries at the thoracic level cause paraplegia (paralysis of the legs and lower trunk). Lumbar and sacral injuries affect leg movement and bladder/bowel control but less commonly cause complete paralysis. The higher the injury, the more of the body is affected.
What is a spinal cord injury without radiographic abnormality (SCIWORA)?
SCIWORA refers to spinal cord injury symptoms — weakness, numbness, or paralysis — in the absence of any bone fracture or dislocation visible on X-ray or CT scan. It is more common in children due to the flexibility of the pediatric spine. MRI is required to identify cord contusion or swelling in these cases. Treatment follows standard SCI protocols.