Medications, exercise, injections, braces, and physical therapy — a complete guide to non-surgical treatment options.
In most cases, the first step is to try relieving your symptoms without surgery.
Conservative treatment has several parts, and each works in a different way. This page gives the overview. Each treatment has its own page with more detail.
What You'll Learn
- What conservative treatment means and why it is tried first
- The four pillars: medications, exercise, nerve blocks, and bracing/physical therapy
- What the clinical guidelines say about each approach
- When conservative treatment reaches its limits
- When surgery should be considered
2. The Four Pillars of Conservative Treatment
Medications
Medications are chosen based on the type of pain you have and the type of stenosis (whether it mainly affects the cauda equina or individual nerve roots). Treatment often combines several drugs, such as anti-inflammatory painkillers, gabapentinoids, SNRIs, and blood-flow-improving agents.
Clinical guidelines give the blood-flow agent limaprost (prostaglandin E1) an Evidence Level A recommendation for patients with cauda equina-type symptoms.
For more details, see the Medications page.
Exercise Therapy
Exercise supervised by a physical therapist works better than exercising on your own. A mix of stretching, strengthening, and stationary cycling tends to work best. In mild to moderate cases, research has shown that the improvement after two years can be comparable to surgery.
Clinical guidelines recommend exercise therapy for all patients except those with severe symptoms. It is low risk and costs little.
For specific exercises (with illustrations), recommended frequency, and practical tips, see the Exercise Therapy page.
Nerve Block Injections
A nerve block is an injection of pain-relieving medication near the nerve that is causing your symptoms. The Japanese clinical guideline (2021) includes it among the conservative options. Relief is often short-lived, and a lasting benefit has not been shown.
One way to think of it: nerve blocks "open a window of reduced pain so that you can make progress with exercise therapy." They are also used to find out exactly which nerve is causing the problem.
For the types of injections, their real-world effectiveness and limitations, and safety information, see the Nerve Block Injections page.
Bracing and Physical Therapy
Braces (such as lumbar corsets) and treatments like electrical stimulation (TENS) work from outside the body to ease symptoms. The scientific evidence for these is limited, but they are sometimes used alongside other treatments.
What the Clinical Guidelines Say
The 2021 Clinical Practice Guidelines for Lumbar Spinal Stenosis evaluate bracing and physical therapy as follows:
| Recommendation |
Strength |
Evidence Level |
| Evidence for bracing and physical therapy is insufficient |
No clear recommendation given |
D (Very weak) |
All four factors that influence the strength of a recommendation (strength of evidence, balance of benefits and harms, patient preferences, and cost) were rated "No" (85% consensus).
This does not mean "there is no point." It means "there is not yet enough research to prove the effect." Individual treatments vary:
| Treatment |
Guideline Assessment |
| Lumbar corset |
Possibly useful for extending walking distance |
| TENS (electrical stimulation) |
Possibly useful for residual symptoms after surgery |
| Walking cane |
Usefulness not demonstrated |
| Ultrasound |
Usefulness not demonstrated |
| Heat therapy |
Usefulness not demonstrated as a standalone treatment |
| Traction |
No research studies available for spinal stenosis |
Lumbar Corset
A corset does several things:
- Limits movement of the lower back to reduce strain
- Increases abdominal pressure to support the spine
- Helps maintain posture
| Type |
Features |
When Used |
| Soft corset |
Made of fabric, flexible |
Everyday support during activities |
| Rigid corset |
Made of plastic, firm |
After surgery or when stronger support is needed |
What the research shows: A randomized controlled trial of 104 patients with lumbar spinal stenosis found that wearing a corset or belt extended walking distance. However, the study did not include a no-treatment control group, so further research is needed to confirm the effect.
How to use your corset properly:
| Guideline |
Why |
| Do not wear it all the time |
Your muscles may weaken with constant support |
| Position it correctly |
An incorrectly placed corset is ineffective or can make things worse |
| Wear it during activity |
Standing, walking, and other active periods |
| Remove it at bedtime |
Unless your doctor instructs otherwise |
Physical Therapy Modalities
These treatments apply heat, electricity, sound waves, or pulling from outside the body to improve symptoms.
| Treatment |
Method |
Guideline Assessment |
| Heat therapy |
Hot packs, infrared lamps, etc. |
Not confirmed as effective alone |
| TENS (transcutaneous electrical stimulation) |
Electrical pulses through the skin |
Possibly useful for post-surgical residual symptoms |
| Ultrasound therapy |
Deep tissue warming via ultrasound |
Not confirmed to improve pain or quality of life |
| Traction therapy |
Pulling on the lower back |
No research available for spinal stenosis |
About TENS: A study of 44 patients reported that TENS was effective for leg pain and numbness that remained after surgery for spinal stenosis. Walking satisfaction was also significantly better in the TENS group. This study looked only at symptoms remaining after surgery, so it is not clear whether the result applies before surgery.
Where physical therapy fits in: These treatments have not been proven effective on their own, but they are sometimes used to support exercise therapy. Ask your doctor or physical therapist which combination suits you.