The MILD procedure — minimally invasive lumbar decompression — is one of the most useful tools we have for a specific kind of patient: an older adult with neurogenic claudication from lumbar spinal stenosis who can’t comfortably walk a block but can lean over a shopping cart and feel better. For the right patient, it’s a remarkably elegant procedure: outpatient, no general anesthesia, no implants, performed through a tube smaller than a pencil.
But “right patient” is doing a lot of work in that sentence. Here are the questions every patient should ask before agreeing to the procedure.
Do I have ligamentum flavum hypertrophy specifically?
The MILD procedure works by removing thickened ligamentum flavum from the back of the spinal canal, decompressing the nerves underneath. It does not address bone spurs, herniated discs, or stenosis from other anatomic sources.
Ask: does my MRI show ligamentum flavum hypertrophy as a major contributor to the stenosis? If the dominant problem is bony stenosis or a large disc herniation, MILD isn’t the right procedure. The patient deserves to know that explicitly, not after the fact.
What’s my expected outcome based on the evidence?
The MILD procedure has been studied in randomized controlled trials and large registries. The MOTION study, the IMPACT registry, and others have shown meaningful pain reduction and walking-distance improvement at one and two years for appropriately selected patients.
That said, the studies define “success” as a 50 percent pain reduction or significant functional improvement — not pain elimination. Be sure your physician is setting realistic expectations. If the conversation sounds like a sales pitch, ask harder questions. If the conversation includes the actual numbers and the chance of partial relief vs full relief vs no relief, that’s a more honest framing.
Is Medicare or my insurance going to cover this?
The MILD procedure is Medicare-covered with a specific coverage policy that requires documentation: imaging-confirmed lumbar spinal stenosis with ligamentum flavum hypertrophy, neurogenic claudication symptoms, and failure of conservative care.
Ask: does my insurance specifically cover MILD, what’s the prior authorization process, and what’s your office’s experience with my insurance plan? Some practices handle this seamlessly. Some don’t.
What’s the recovery actually like?
This surprises patients in a good way. Most MILD recoveries are mild (no pun intended). You go home the same day, you’re walking that evening, you can return to most normal activity within a few days, and the small skin incision heals without sutures.
That said, the immediate post-procedure period can include some soreness in the procedure area, and some patients have a temporary increase in their underlying back symptoms for the first week or two before improvement starts. Ask what your physician’s typical patient looks like at one week, two weeks, and six weeks after the procedure.
What if MILD doesn’t work?
This is the question I want every patient to ask, because the answer matters for the decision.
If MILD doesn’t work, you’ve still preserved every other option. The vertebrae are intact. The hardware question is still off the table. You can still have a laminectomy if needed. You can still consider epidural steroid injections, spinal cord stimulation for refractory neurogenic claudication, or other interventions. The MILD procedure doesn’t burn any bridges.
Compare that to surgical laminectomy, which is more definitive but also more invasive and harder to undo. The reversibility of MILD is part of what makes it attractive for the right patient.
How many of these have you actually done?
MILD is a procedure where experience matters. The patient-selection judgment, the lead placement, and the technique all benefit from a physician who does a meaningful volume of these.
Ask: how many MILD procedures have you performed, and how many do you do per month currently? You’re not looking for the highest number. You’re looking for someone who does enough to be skilled and current, and who can speak honestly about the cases that didn’t go as planned.
Am I better off with a different procedure?
For some patients with lumbar spinal stenosis, MILD is the best option. For others, an interlaminar epidural steroid injection might be a better starting point — less invasive, often very effective for shorter-term relief. For others with severe stenosis, surgical laminectomy might be the better long-term answer.
The right physician walks you through the alternatives — not as a formality but as a genuine decision tree. Ask: what are my options other than MILD, and why is this one the best fit for me specifically?
Will you do an interlaminar epidural at the same time?
Some practices combine MILD with an interlaminar epidural steroid injection during the same procedure. The rationale is that the steroid can address inflammatory pain components while the MILD addresses the mechanical compression. There’s reasonable evidence for this approach in selected cases.
Ask whether your physician does this combined approach and why. The answer should be specific to your case, not a default protocol.
Is there a follow-up plan?
A successful MILD outcome often means resuming activities that have been avoided for a long time — walking, gardening, standing through events, traveling. For some patients, that comes with secondary musculoskeletal issues from years of inactivity that need their own attention.
Ask: what’s the follow-up plan at four weeks, twelve weeks, and one year? Does your office help with rehabilitation referrals if I need them? You want a plan, not just a procedure.
My approach in the Hoffman Estates practice
I’ve performed MILD procedures on patients from across the northwest Chicago suburbs, and I’m careful about who I recommend it for. The patient who does best is one with imaging that clearly shows ligamentum flavum hypertrophy as the dominant problem, who has classic neurogenic claudication symptoms, who has tried conservative care, and who has realistic expectations about partial vs full relief.
I’ve also told patients no — that MILD isn’t the right procedure for their imaging — and I’ve sent them either back to conservative care or forward to surgical evaluation depending on the picture. The job isn’t to perform MILD on every candidate. The job is to do MILD on patients who will benefit from it.
If you’re in Hoffman Estates, Schaumburg, Palatine, Arlington Heights, Barrington, Rolling Meadows, Elk Grove Village, or anywhere in the northwest Chicago suburbs and you’ve been told you have lumbar spinal stenosis, call (847) 981-3630 to schedule a consultation. Bring your most recent lumbar MRI and a list of what you’ve already tried. We’ll figure out together whether MILD is the right next step — or whether something else is.
Dr. Keith Schmidt is a triple board-certified interventional pain management physician in Hoffman Estates, Illinois, serving Schaumburg and the northwest Chicago suburbs. He specializes in advanced minimally invasive treatments for lumbar spinal stenosis, including the MILD procedure, basivertebral nerve ablation (Intracept), and spinal cord stimulation.