What is cauda equina
Ava Wright
Published Apr 21, 2026
The cauda equina is the sack of nerve roots (nerves that leave the spinal cord between spaces in the bones of the spine to connect to other parts of the body) at the lower end of the spinal cord. These nerve roots provide the ability to move and feel sensation in the legs and the bladder.
What are the first signs of cauda equina?
- Lower limb weakness and intermittent changes in sensation, such as numbness.
- “Saddle anesthesia” – loss or diminished sensation in areas where a person would sit on a saddle.
- Urinary and/or bowel problems, such as retention or incontinence.
What happens in cauda equina?
Cauda equina syndrome occurs when the nerve roots in the lumbar spine are compressed, cutting off sensation and movement. Nerve roots that control the function of the bladder and bowel are especially vulnerable to damage.
What happens if cauda equina is not treated?
If left untreated, cauda equina syndrome can lead to permanent paralysis in the muscle of one or both legs and permanent loss of bladder/bowel control. An important thing to note is that following surgery, bladder function may take longer to improve than muscle function.What is the most common cause of cauda equina syndrome?
- A severe ruptured disk in the lumbar area (the most common cause)
- Narrowing of the spinal canal (stenosis)
- A spinal lesion or malignant tumor.
- A spinal infection, inflammation, hemorrhage, or fracture.
Can cauda equina go away on its own?
Either way, the cauda equina nerves are being compressed and injured. If the compression continues for too long, the nerves will sustain significant damage and will be permanently harmed meaning that sadly in this situation the cauda equina syndrome does not go away.
How does cauda equina start?
Cauda equina syndrome can present in 2 ways: acute onset, where the symptoms and signs occur rapidly, and insidious onset, where the condition begins as lower back pain and slowly progresses to bowel and urinary incontinence. Cauda equina syndrome is most commonly caused by compression from a lumbar herniated disc.
How common is cauda equina?
Cauda equina syndrome is a relatively rare condition, comprising around 2–6% of lumbar disc operations [16, 17, 31], with an incidence in the population thought to be between 1 in 33,000 to 1 in 100,000 [1].Can you live with cauda equina syndrome?
Although cauda equina syndrome is not a fatal condition, it can cause severe neurological damage. If the condition is not treated quickly enough, this damage may be irreversible, meaning a patient will not make a full recovery.
Why is cauda equina an emergency?When the Cauda Equina nerves are compressed this normally results in what are commonly referred to as ‘red flag’ symptoms. Cauda Equina Syndrome is a medical emergency because delayed decompression surgery can result in lifelong disability.
Article first time published onWhy does cauda equina cause incontinence?
Why Might A Person With Cauda Equina Syndrome Become Incontinent? The cauda equina nerves supply muscle sensation to the bladder, bowel and legs. When these nerves become suppressed from Cauda Equina Syndrome then muscle sensation becomes lost which can result in loss of bladder and/ or bowel control.
How do you fix cauda equina syndrome?
Cauda equina syndrome is best treated with decompression by a lumbar laminectomy, but a lumbar microdiscectomy may be used given a patient’s unique situation. The patient will likely be kept in the hospital for a few days following the surgery to monitor recovery of motor and sensory function.
Can cauda equina come and go?
The short answer is that cauda equina can develop very suddenly, or it can develop very gradually with symptoms appearing to come and go.
Can you still walk with cauda equina?
Cauda equina syndrome is a medical emergency that calls for urgent surgical intervention. If patients with cauda equina syndrome do not receive treatment quickly, adverse results can include paralysis, impaired bladder, and/or bowel control, difficulty walking, and/or other neurological and physical problems.
How quickly does cauda equina progress?
Unlike most back problems that are longstanding or chronic, cauda equina is an acute event, like a stroke or heart attack. It most often develops rapidly, within as few as 6 to 10 hours.
Can you have cauda equina and not know?
Since one of the factors that can bring on cauda equina is long-term compression, is it possible to not know that you’re living with it? Well, yes and no. You’ll likely be aware of the symptoms of another spinal condition that crowds the spinal canal before cauda equina syndrome materializes.
How long before nerve pain goes away after laminectomy?
Sometimes this is a temporary condition as the nerve root or roots take time to heal. This can take days to weeks. If the pain is still there after 3 months, it is unlikely to improve on its own.
What is the difference between cauda equina and sciatica?
Sciatica and Cauda Equina Syndrome (CES) can share similar symptoms. Sciatica is a common ailment that usually resolves itself without the need for extensive treatment. On the other hand, Cauda Equina Syndrome is a serious medical emergency that requires immediate treatment.
Does cauda equina make you constipated?
Therefore cauda equina syndrome can cause constipation. This happens because the cauda equina nerves enable function in the pelvic organs and rectum. When they are compressed this function will be lost, affecting bowel function.