Anterior Cord Syndrome
SpineOverview
Anterior Cord Syndrome is a spinal cord injury affecting the anterior two-thirds of the spinal cord, typically resulting from trauma, disc herniation, or vascular compromise. It presents with loss of motor function and pain/temperature sensation below the level of injury, while preserving dorsal column function (proprioception and vibration sense). This syndrome carries a relatively poor prognosis for motor recovery compared to other incomplete spinal cord injuries.
Pathophysiology
Anterior Cord Syndrome results from damage to the corticospinal tracts (motor), spinothalamic tracts (pain and temperature), and anterior spinal artery territory. The injury may be caused by traumatic compression, acute disc herniation, thrombosis of the anterior spinal artery, or hyperextension injuries. The anterior two-thirds of the cord is supplied by the single anterior spinal artery, making this region particularly vulnerable to ischemic injury. Preserved dorsal column function (medial lemniscus) indicates sparing of posterior columns, distinguishing this from complete transection.
Patient Education
Anterior Cord Syndrome is a serious spinal cord injury requiring immediate medical intervention and specialist neurological rehabilitation; recovery depends on the extent of initial damage, but preserved sensation indicates incomplete injury with potential for some functional recovery through intensive rehabilitation.
Typical Presentation
Site
Bilateral symptoms below the level of spinal cord injury; typically thoracic or cervical regions depending on lesion location
Quality
Acute onset of weakness and loss of pain/temperature sensation; preserved proprioception and vibration sense
Intensity
Severe motor deficits (paraplegia or tetraplegia depending on level); complete loss of pain and temperature sensation below lesion
Aggravating
Any movement or manipulation of the spine; increased intrathoracic or intra-abdominal pressure; spasticity development over weeks to months
Relieving
Immobilization; controlled rehabilitation; management of spasticity; positioning and pressure relief
Associated
Retained proprioception and vibration sense (hallmark), flaccid paralysis acutely progressing to spasticity, loss of bowel/bladder control, autonomic dysreflexia risk, pain above injury level, sexual dysfunction
Orthopaedic Tests
Test descriptions are written with AI assistance from standard clinical texts. Where a test lists Sources, its description has been checked against them; those sources are independent and do not endorse OsteoKit. Accuracy figures and grades (A–D) appear only when checked against the published study; tests without one are marked “No accuracy study”.
Further reading: full test procedures are described in standard clinical examination texts, e.g. Magee & Manske, Orthopedic Physical Assessment (7th ed.), and Cook & Hegedus, Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd ed.).
Motor Strength Testing (Manual Muscle Testing)
Procedure
With the spine kept still, test strength in key muscles of both arms and legs and compare sides.
Positive Finding
Weakness or paralysis on both sides below the level of the injury.
Interpretation
Bilateral loss of movement below the injury is the main feature of anterior cord syndrome, from damage to the anterior two-thirds of the cord (often loss of blood supply). One-sided weakness would point to Brown-Séquard syndrome instead. This is an emergency.
Pinprick and Temperature Sensation Testing
Procedure
Test pin-prick (and temperature, if available) through the dermatomes on both sides, from above the suspected level downwards.
Positive Finding
Loss of pain and temperature sensation on both sides below the level of the injury.
Interpretation
Reflects damage to the spinothalamic tracts in the front of the cord. Combined with preserved light touch and position sense, it gives the typical pattern of anterior cord syndrome.
Light Touch and Proprioception Testing (Dorsal Column Function)
Procedure
Test light touch, vibration and joint position sense in the toes and fingers on both sides.
Positive Finding
Light touch, vibration and position sense preserved below the level of the injury.
Interpretation
The dorsal columns lie in the back of the cord, which keeps its blood supply, so preserved position sense with loss of movement and pain sensation is the typical anterior cord pattern.
Babinski Test (Plantar Response)
Procedure
Stroke the outer sole of the foot firmly from heel towards the little toe and across the ball of the foot.
Positive Finding
The big toe extends upwards, often with fanning of the other toes.
Interpretation
An upper motor neuron sign showing corticospinal tract involvement. It may be absent in the first days after injury (spinal shock).
Deep Tendon Reflex Testing (Patellar and Achilles)
Procedure
Test the patellar and Achilles reflexes on both sides with the limbs relaxed.
Positive Finding
Absent reflexes early after injury, becoming brisk over days to weeks.
Interpretation
Early loss of reflexes reflects spinal shock; later brisk reflexes reflect loss of control from the brain. Either pattern supports a cord injury rather than a peripheral nerve problem.
Sources
- Reference bookKhan MM, Munakomi S, Dalal K. Anterior Cord Syndrome (Ventral Cord Syndrome). StatPearls [Internet]. StatPearls Publishing; updated 7 Nov 2025.
- RelatedASIA International Standards 2019
Sacral Function Assessment
Procedure
Performed by the medical team: perianal sensation and anal sphincter tone and voluntary contraction (S4–S5). The osteopath asks about saddle sensation and bladder or bowel change.
Positive Finding
Loss of perianal pain sensation and anal contraction, or preserved sacral function (sacral sparing).
Interpretation
Sacral sparing means the injury is incomplete and carries a better outlook. It is part of the ASIA examination done in hospital.
⚠ Red Flags
- •Acute spinal cord injury requiring emergency immobilization and imaging
- •Rapidly progressive neurological deficit or deterioration
- •Priapism or profound hypotension with bradycardia suggesting neurogenic shock
- •Complete motor loss with acute onset
- •Associated vertebral fracture or instability on imaging
- •Evidence of vascular compromise or ischemic cord changes on MRI
- •Fever, systemic infection, or signs of spinal infection
- •Inability to maintain airway or respiratory compromise from high cervical injury
⚡ Yellow Flags
- •High levels of catastrophizing about prognosis and future function
- •Depression or anxiety related to sudden disability and loss of independence
- •Inadequate social support or home environment for rehabilitation
- •Substance abuse history complicating rehabilitation compliance
- •Anosognosia or minimisation of deficits affecting informed consent for rehabilitation goals
- •Secondary trauma or PTSD from mechanism of injury
- •Poor medication adherence affecting spasticity and pain management
Osteopathic Techniques
Refer first
This condition needs medical assessment and management first. Do not use neck-directed manual techniques. Any osteopathic care is supportive, away from the injured area, and only once the treating team has cleared it. Care is supportive: treat the cause, protect blood flow to the spinal cord, and start rehabilitation early.
- Journal articleRushton et al. · J Orthop Sports Phys Ther 2023
- Reference bookStenersen & Bordoni · StatPearls 2024
- Reference bookBazzi & Sergent · StatPearls 2023
- Reference bookKhan et al. · StatPearls 2025
Rehabilitation Exercises
Passive Upper Extremity Range of Motion (shoulders, elbows, wrists, fingers)
Passive Hip, Knee, and Ankle Range of Motion (bilateral lower limbs)
Cervical Spine Gentle Active Range of Motion (flexion, extension, lateral flexion, rotation - above injury level only)
Shoulder Shrugs and Scapular Retraction (intact musculature, cervical injury)
Seated Upper Extremity Weights or Resistance Band Exercises (shoulders, arms - cervical injury)
Grip Strength and Hand Dexterity Training (where hand function preserved)
Seated Balance Training and Weight Shifting (for wheelchair users)
Spinal Postural Alignment and Positioning in Wheelchair or Bed
Pressure Relief Techniques and Repositioning Schedule (every 2 hours)
Gentle Sustained Stretching of Hip Flexors and Hamstrings (passive, to prevent contracture)
Arm Ergometry or Hand Cycling (for cardiovascular fitness and upper body strengthening)
Gentle Trunk Side-Bending (active, above lesion level for mobility and spinal fluid circulation)
Referral Criteria
- •All suspected or confirmed anterior cord syndrome requires immediate referral to emergency department and spinal surgery/neurosurgery evaluation
- •Referral to specialized spinal cord injury rehabilitation center or program for comprehensive rehabilitation
- •Neurology consultation for ongoing neurological assessment, spasticity management, and neuropathic pain management
- •Urologist/urodynamics for bowel and bladder management protocols
- •Physiatry specialist for comprehensive rehabilitation medicine approach
- •Psychology/psychiatry for mental health support and adjustment to disability
- •Social work for discharge planning, equipment needs, and community integration
- •Respiratory therapy if respiratory compromise present (cervical injury)
- •Occupational therapy for activities of daily living adaptation and upper extremity function
- •Vocational rehabilitation specialist for return-to-work assessment
- •Specialist pain management for neuropathic pain and above-level pain syndromes
- •Infectious disease if signs of spinal infection or urinary tract infection recurrence