Medically reviewed by Dr. David L. Greenwald, MD, FAANS, FACS — dual board-certified spine surgeon & neurosurgeon. Last reviewed October 2026.

Spinal stenosis is a narrowing of the spinal canal that squeezes the nerves or spinal cord, causing pain, numbness, and weakness — often worse with standing or walking. When injections and therapy no longer control it, surgery reopens the space the nerves need, with the least invasive approach your anatomy allows.

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What Is Spinal Stenosis Surgery?

Spinal stenosis surgery is a decompression procedure that enlarges a spinal canal that has narrowed over time — removing the overgrown bone, thickened ligament, or bulging disc material that is crowding the nerves or spinal cord. The goal is straightforward: give the nerves room again, so the leg pain, heaviness, numbness, and loss of walking distance ease and you can stand, walk, and move without being driven to sit down. It is not one fixed operation but a family of decompression techniques — laminectomy, laminotomy, and foraminotomy — sometimes paired with a stabilizing step when the spine is loose.

At Desert Spine and Pain, surgery is the last step, not the first. Most stenosis is managed for a long time with conservative care and interventional pain procedures such as epidural steroid injections. When those stop controlling the symptoms — or when weakness and balance problems signal the nerves are in trouble — decompression, done well, can relieve pressure that nothing else has reached. Because Dr. Greenwald is both a spine surgeon and a neurosurgeon, the bone, the ligament, and the delicate nerves are all handled by one expert.

Our Stenosis Surgery Procedures

Most people searching for "spinal stenosis surgery" don't yet know which operation they need — that's our job to determine from your exam and imaging. These are the main approaches we offer, each matched to where the narrowing is and whether the spine is stable:

When Is Stenosis Surgery Needed?

Stenosis surgery is almost always a planned, elective decision — not an emergency — and it becomes the right choice in the minority of cases where the narrowing is clearly driving symptoms that won't settle. You should be evaluated for surgery when:

• You have neurogenic claudication. Leg pain, cramping, numbness, or heaviness that comes on with standing and walking and eases when you sit down or lean forward — the hallmark of lumbar stenosis, and often the symptom that shrinks how far you can walk.
• Conservative care hasn't worked. Symptoms that persist despite weeks to months of physical therapy, activity modification, medication, and image-guided epidural injections.
• You have progressive weakness or balance problems. Worsening leg weakness, foot drop, or unsteadiness on your feet — signs the nerves or spinal cord are under meaningful pressure.
• Your quality of life is shrinking. When pain and limited walking distance keep you from work, exercise, and the things you enjoy, decompression can give that distance back.

The Least Invasive Fix That Lasts

Stenosis surgery is about creating room — removing the bone, ligament, or disc that's crowding the nerves. The skill is doing it thoroughly while keeping the spine stable, so the relief lasts and a fusion isn't needed unless instability demands it. Decompression alone is the right answer for many patients; a fusion is added only when removing the narrowing would leave a segment loose — for example, alongside a slipped vertebra (spondylolisthesis). For select lumbar patients, a motion-preserving Coflex implant offers decompression without fusion. As both a spine surgeon and neurosurgeon, Dr. Greenwald operates confidently from the neck to the low back.

The Minimally Invasive Advantage

Whenever your anatomy allows, Dr. Greenwald decompresses the canal through a small incision using a tubular retractor that gently spreads the muscle instead of cutting through it. Compared with traditional open surgery, a minimally invasive approach generally means less blood loss, less post-operative pain, a shorter hospital stay, and a faster return to activity. Many decompressions are done on an outpatient basis, so you go home the same day. Not every stenosis — particularly multi-level narrowing or cases needing fusion — can be solved this way, but when it can, it's our first choice.

What to Expect — From Consultation to Recovery

Deciding on surgery should never feel rushed or one-sided. Here's how the process works at Desert Spine and Pain:

• Consultation & imaging. Dr. Greenwald reviews your history, examines your strength, reflexes, and walking, and studies your MRI or CT to pinpoint exactly where — and how severely — the canal is narrowed.
• An honest recommendation. You'll hear whether decompression is truly warranted, whether a stabilizing step is needed, and whether a less-invasive option could work first. If surgery isn't the answer yet, we'll tell you.
• The procedure. Your decompression is performed by Dr. Greenwald at an accredited affiliated surgical facility, using the least-invasive technique that will fully open the space the nerves need.
• Recovery & follow-up. You're given a clear, personalized recovery plan and seen in follow-up to make sure the nerves are settling, your walking is improving, and you're getting back to the activities you love.

Recovery & Getting Back to Life

Recovery depends on the procedure. After a minimally invasive decompression or laminotomy, many patients are up and walking the same day and returning to light activity within a couple of weeks, with the leg pain and heaviness of claudication often easing soon after the pressure is relieved. When a fusion is required for stability, recovery takes longer — often several months for the bone to heal fully — with activity increased gradually along the way. How completely the nerves recover depends in part on how long they were compressed, which is one reason we don't recommend waiting until weakness sets in. Whatever the operation, you'll leave with specific instructions and a recovery timeline built around your life and your goals.

Insurance, Out-of-Network & Cost

We welcome out-of-network patients of every kind and you don't need a referral to be seen. Our team verifies your coverage and explains any out-of-pocket costs before anything is scheduled, so there are no surprises. Because many of our patients come to us after a car accident or injury that unmasked or worsened their stenosis, we also coordinate closely with personal-injury attorneys and offer 24/7 concierge support for accident-related spine care.

Proudly Serving the Greater Phoenix, Arizona Area

Why Choose Our Stenosis Surgeon in Phoenix

Your surgery is performed by a dual board-certified spine surgeon and neurosurgeon who treats stenosis at every level and favors the least invasive, most durable solution — fusing only when instability truly requires it. We welcome out-of-network patients, require no referral, and coordinate with personal-injury attorneys.

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Spinal Stenosis Surgery: Frequently Asked Questions