Lumbar Spine
Cauda Equina Syndrome
The one true surgical emergency of the lower spine — compression of the nerve bundle controlling bladder, bowel, and the legs. If you suspect it, do not wait for an appointment: go to the emergency department now.
This is a medical emergency
If you have the emergency symptoms described on this page — such as new loss of bladder or bowel control, new numbness in the saddle region, or rapidly worsening weakness — do not wait for a clinic appointment. Call 911 or go to the nearest emergency department.
What it is
Below the spinal cord, the spinal canal carries a bundle of nerve roots called the cauda equina — "horse's tail" — which controls the legs, the bladder, the bowel, and sensation in the saddle region. Cauda equina syndrome is severe compression of that entire bundle at once, most often from a large disc herniation, and it is the one condition on this site where hours genuinely matter.
This page exists mostly to be found at the right moment. If you have new trouble controlling or emptying your bladder, new numbness in the area that would sit on a saddle, or rapidly progressing weakness in both legs — especially alongside severe back or leg pain — stop reading and go to the nearest emergency department. Call 911 if you cannot get there quickly.
How we approach it
In the emergency setting, the evaluation is immediate: a focused exam — saddle sensation, rectal tone, bladder function — and an urgent MRI of the lumbar spine. A bladder scan checking how much urine remains after voiding is a simple test that carries real weight.
When the MRI confirms compression of the cauda equina with matching symptoms, the treatment is urgent surgical decompression. This is not a condition managed with injections, therapy, or watchful waiting — the nerves controlling bladder and bowel tolerate compression poorly, and function not relieved promptly may not return.
The honest reason for urgency: outcomes track with how quickly the pressure comes off. Decompression within the first day or two of true cauda equina symptoms gives the best chance of recovering bladder, bowel, and leg function.
When surgery is considered
Confirmed cauda equina syndrome is an indication for urgent surgery — typically a decompression (laminectomy) at the affected level with removal of the disc material compressing the nerves, performed as an emergency rather than a scheduled case.
Afterward, recovery of nerve function is gradual and sometimes incomplete, which is exactly why the front end moves so fast. Bladder and bowel recovery is followed closely, and pelvic-floor therapy and urology are brought in when needed. This is a condition where the surgery is the beginning of the story, and we walk the rest of it with you.
Common symptoms
- New difficulty starting urination, or loss of bladder control — emergency
- Numbness in the saddle region (groin, buttocks, inner thighs) — emergency
- New loss of bowel control — emergency
- Weakness or numbness in both legs, often rapidly worsening
- Severe low back pain with sciatica in one or both legs
Immediate steps
- There are none for confirmed cauda equina syndrome — this is a surgical emergency
- Emergency department evaluation and urgent MRI are the immediate steps
- Conservative care applies only after decompression: pelvic-floor therapy, urology follow-up, and structured rehabilitation
Related procedures
If surgery is the right next step, the most common procedures for this condition are:
Do not schedule an appointment for these symptoms
Call 911 or go to the nearest emergency department now. After emergency care, our office coordinates follow-up — (785) 368-0767.
Medical review in progress. Author: practice editorial team.
The information on this page is general patient education and is not a substitute for individualized medical advice. For urgent symptoms, call 911 or go to the nearest emergency department. For non-urgent questions, call (785) 368-0767.