Lumbar spinal stenosis can turn simple daily activities into exhausting tasks. When the space around the nerves in the lower back becomes too tight, standing or walking can trigger burning leg pain, numbness, and weakness that eases only when you sit or bend forward. Many people find themselves planning every outing around where they can stop to rest.
For some patients, the MILD (Minimally Invasive Lumbar Decompression) procedure can be an important non-surgical option. As an interventional pain specialist, Dr. Edward Rubin offers advanced, minimally invasive treatments for spinal stenosis to patients in Nassau County and across Long Island who have not improved with conservative care. In this guide, we explain what lumbar spinal stenosis is, how the MILD procedure works, who it may help, and what to expect from recovery, so you can have a more informed conversation with your doctor about your next steps.
Understanding Lumbar Spinal Stenosis and Your Pain
Lumbar spinal stenosis occurs when the spinal canal in the lower back narrows and places pressure on the nerves that travel into the legs. This narrowing commonly leads to neurogenic claudication, a pattern of symptoms that includes leg pain, heaviness, tingling, or weakness that worsens with standing or walking and improves when sitting or leaning forward. People often describe needing to stop frequently while walking, or finding relief by leaning on a shopping cart.
This pattern occurs because the spinal canal narrows further in extension (standing upright) and opens in flexion (bending forward). Standing still in a line is often more painful than walking, and symptoms frequently affect both legs.
A key cause of this narrowing is thickening of a structure called the ligamentum flavum, a band of tissue that runs along the back of the spinal canal. With age and wear and tear, this ligament can become bulky — sometimes doubling or tripling in thickness — contributing to crowding of the nerves. Other age-related changes, such as disc height loss or bone overgrowth, may also play a role.
To confirm a diagnosis of lumbar spinal stenosis, we combine a careful medical history and physical exam with imaging such as MRI or CT. As an interventional pain specialist, Dr. Rubin evaluates how well your symptoms match what appears on the scans, which is important for targeting the right area and choosing the right treatment.
First-line treatments typically include options such as:
- Physical therapy and home exercise programs
- Medications for pain and inflammation
- Epidural steroid injections to calm irritated nerves
While many patients do well with these measures, others continue to struggle with pain and limited walking despite months of conservative care. That is often when we begin discussing procedures like MILD.
What the MILD Procedure Is and How It Works
The MILD procedure is a fluoroscopy-guided, minimally invasive lumbar decompression designed to gently create more room for the nerves. It focuses on removing small portions of the thickened ligamentum flavum that are crowding the spinal canal, without removing bone or placing implants.
In simple terms, here is how the procedure typically works:
- You arrive at an outpatient setting, and your lower back is cleaned and numbed with local anesthesia. Light sedation is often used to keep you comfortable.
- Using real-time X-ray guidance called fluoroscopy, we insert a specialized instrument through a tiny incision in your lower back, usually about the size of the tip of a pencil.
- Through this opening, we remove small pieces of the thickened ligament and excess tissue that are pressing on the nerves.
- Because the incision is so small, stitches are not always needed, and a bandage is often enough to cover the area.
MILD differs from traditional back surgery in several important ways. It generally does not require general anesthesia, there is no removal of bone, and no hardware such as screws or rods is placed. Tissue disruption is limited to what is needed to relieve pressure from the ligament, which is one reason recovery is often faster than with open surgery.
Spinal stenosis patients who may be considered good candidates include those with:
- Confirmed lumbar spinal stenosis with ligamentum flavum thickening
- Symptoms of neurogenic claudication that have not improved with conservative care
- No severe spinal instability or major deformity that would require more extensive surgery
As an interventional pain specialist, Dr. Rubin may recommend MILD over other options if your imaging and symptoms suggest that ligament thickening is a main contributor to your stenosis and you either wish to avoid major surgery or are not a good candidate for it.
What the Research Shows
The ENCORE randomized controlled trial compared MILD to continued epidural steroid injections for neurogenic claudication. The trial found:
- Significantly greater improvement in walking tolerance with MILD compared with epidural steroid injections
- Improved pain and function scores maintained at two-year follow-up
- No serious adverse events attributable to the procedure
Those findings are part of why Dr. Rubin places such emphasis on patient selection: the results are strongest when thickened ligament is genuinely the main source of the narrowing.
Key Benefits Patients May Experience with MILD
The most important potential benefit of MILD is relief from symptoms. By decreasing pressure on the nerves, many patients experience less leg pain, less heaviness or numbness, and the ability to stand or walk longer distances without needing to stop as often. Some people notice they do not have to lean forward on a cart or cane as much for comfort.
There are also advantages that come from the minimally invasive nature of the procedure:
- Tiny incision and limited tissue disruption
- Outpatient setting in many cases
- Reduced need for strong pain medications compared with more invasive surgery
- Shorter downtime for many patients
Clinical experience suggests that MILD can provide meaningful relief with a low rate of complications for properly selected patients. For some, it can help delay or even avoid the need for major spine surgery, especially when symptoms are primarily related to ligament thickening.
Perhaps just as important are the daily quality-of-life gains. When pain lessens and walking improves, patients often feel more able to:
- Walk around the neighborhood or in a park
- Shop for groceries without constant breaks
- Travel and stand in lines more comfortably
- Keep up with household tasks and social activities
These functional improvements are often what matter most to people living with spinal stenosis.
Risks, Candidacy, and When MILD May Not Be Enough
Like any procedure, MILD carries possible risks and side effects. These can include bleeding, infection, soreness or bruising at the incision site, and, rarely, nerve irritation or damage. Some patients may experience limited or no relief if their stenosis is driven by factors beyond ligament thickening, or if their broader spinal condition is more complex.
MILD is not right for everyone. Patients who may not be good candidates include those with:
- Marked spinal instability, such as significant slippage of one vertebra over another
- Certain types of previous spine surgeries at the same level
- Other serious spinal problems that clearly require more extensive decompression or fusion
A thorough evaluation with an interventional pain specialist is essential. We carefully review your imaging, medical history, and goals, and then weigh MILD against other options. Those alternatives can include additional epidural injections, spinal cord stimulation for persistent nerve pain, the Minuteman implant when instability is a factor, or traditional decompression surgery for more advanced structural problems. (For a side-by-side look at two of these options, see our guide to choosing between Minuteman and MILD.) Understanding where MILD fits in this spectrum helps us recommend a plan that matches your needs and risk profile.
What to Expect Before, During, and After MILD
Preparation for the MILD procedure usually starts with medical clearance and a review of your current medications. If you take blood thinners or certain other medications, we may coordinate temporary adjustments with your prescribing doctors. We also talk honestly about expected results so you understand that improvement may be gradual over several weeks, rather than instant.
On the day of the procedure, you check in, meet the care team, and review the plan again. The procedure itself typically takes a relatively short time, though you should expect to be at the facility for several hours to allow for preparation and recovery. Local anesthesia and light sedation are commonly used, and you are monitored closely afterward. Many patients are able to go home the same day with a responsible adult to drive them.
During the first 24 to 72 hours, soreness at the incision site is common, and we usually recommend avoiding heavy lifting or strenuous bending. Short, frequent walks are often encouraged, gradually increasing as comfort allows. Returning to work or regular routines depends on the nature of your job and your overall health, but many people resume light activities relatively quickly. Symptom relief typically builds over several weeks as inflammation settles and your body adjusts to the increased space around the nerves.
Follow-up care with Dr. Rubin focuses on monitoring your progress, fine-tuning activity guidelines, and, when appropriate, incorporating physical therapy or home exercises to support long-term spine health. We also discuss any new or concerning symptoms promptly so we can address them early and keep your recovery moving in the right direction.
MILD is covered by Medicare and most commercial insurance plans. Our team can help you understand your specific coverage and what to expect before scheduling.
Taking the Next Step Toward Spinal Stenosis Relief
Living with lumbar spinal stenosis can be frustrating and isolating, especially when walking or standing becomes painful. While no single treatment is right for everyone, minimally invasive options like the MILD procedure give many patients a way to pursue relief without major surgery.
By working with an interventional pain specialist who understands both conservative and minimally invasive approaches, you can explore whether MILD fits your specific situation, medical history, and goals. Bringing prior imaging, a list of medications, and a record of treatments you have already tried helps make that discussion more productive and tailored to you. You do not have to accept severe spinal stenosis symptoms as an unavoidable part of aging, and taking time to learn about options like MILD is an important step toward reclaiming comfort and mobility.
Find Out Whether MILD Is Right for You
If spinal stenosis is limiting how far you can walk or how long you can stand, we can help you explore non-surgical options — including the MILD procedure — and determine whether your imaging and symptoms make you a good candidate. Dr. Edward Rubin sees patients from throughout Nassau County, Queens, and Long Island at our Garden City and New Hyde Park offices, taking the time to review your history and build a plan around your goals. Bring your lumbar MRI if you have one. Call us at 516-492-3100 or text 516-206-0774 to schedule a consultation — same-week appointments are often available for new patients.
Written by Dr. Edward Rubin, MD, board-certified in Pain Medicine and Anesthesiology, with fellowship training at Cornell, Columbia, Hospital for Special Surgery, and Memorial Sloan Kettering. Dr. Rubin has been treating chronic pain patients on Long Island for over 20 years.
