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Cauda Equina Syndrome

(CES; Compression of Spinal Nerve Roots; Syndrome, Cauda Equina; Spinal Nerve Roots, Compression)


Cauda equina syndrome (CES) occurs when the nerve roots at the base of the spinal cord are compressed. Known as the cauda equina, this bundle of nerves is responsible for the sensation and function of the bladder, bowel, sexual organs, and legs. CES is a medical emergency. If treatment is not started to relieve pressure on the nerves, function below the waist may be lost.
Cauda Equina
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A common cause of CES is injury of a spinal disk on the nerve roots. A spinal disk is a semi-soft mass of tissue between the bones of the spine. These bones are known as the vertebrae. The disks act as the spine’s shock absorbers. When a disk spills out into the spinal canal, it can press against the bundle of nerves, causing CES. This syndrome may also be caused by:

Risk Factors

Factors that may increase your risk of developing CES include:


Symptoms may include:


Your doctor will ask about your symptoms and medical history. A physical exam will be done. A neurological exam, which includes testing reflexes, vision, mental status, and strength, may also be done. A rectal exam may be done to assess sphincter function.
Images may be taken of your bodily structures. This can be done with:
Your muscle activity may be measured. This can be done with electromyography.


Talk with your doctor about the best treatment plan for you. Treatment options include the following:
Your doctor may also treat the underlying cause of CES.

Follow-up Care

The long-term effects of CES can range from mild to severe. Problems may include:
  • Difficulty walking
  • Problems with bladder and bowels
  • Sexual dysfunction
  • Paralysis
Your follow-up care may involve working with a:
  • Physical therapist
  • Occupational therapist
  • Neurologist
  • Incontinence specialist—if you have lost bladder control


Your doctor may prescribe medication for:
  • Pain
  • Bladder and bowel difficulties


There is no way to prevent CES.


Cauda Equina Syndrome Resource Center

National Spinal Cord Injury Association


Canadian Spinal Research Organization

Spinal Cord Injury Canada


Cauda equina syndrome. American Academy of Orthopaedic Surgeons website. Available at: Updated October 2007. Accessed November 16, 2013.

Cauda equina syndrome. EBSCO DynaMed website. Available at: Updated June 8, 2013. Accessed November 16, 2013.

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