Stenosis Surgery
For patients with lumbar spinal stenosis, the classic surgery is decompression (laminectomy or laminotomy). While effective, decompression alone can sometimes leave the spine less stable, leading to fusion. The Coflex® Interlaminar Stabilization® device offers an alternative: after decompression, a small implant is placed between the spinous processes to provide stability without eliminating motion. At Desert Spine and Pain, neurosurgeon Dr. David L. Greenwald, M.D., FAANS, FACS offers Coflex placement for properly selected patients, combining reliable decompression with motion preservation.

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For the right lumbar stenosis patient, a decompression paired with a Coflex interspinous device relieves the crowded nerves and adds gentle stabilization — while preserving motion and avoiding a full fusion. It's a middle-ground option between decompression alone and fusion.
Book a Consultation — (602) 566-9500How the Coflex Device Works
This procedure combines a decompression for lumbar stenosis with a Coflex interspinous device — a small U-shaped implant placed between the spinous processes at the treated level. The decompression relieves the crowded nerves; the Coflex adds gentle stability and helps keep the canal open, while preserving motion rather than fusing the segment. For select patients, it sits between a decompression alone and a full fusion.
Coflex is considered for lumbar stenosis at one or two levels in patients who need decompression plus some stabilization — but not a full fusion — and whose anatomy and alignment are suitable. It isn't for every stenosis patient; a careful evaluation determines whether decompression alone, Coflex, or a fusion best fits your spine.
Book a Consultation — (602) 566-9500Relieves lumbar stenosis while preserving motion; adds stability without a full fusion; minimally invasive; a middle-ground option for select patients.
Risks include bleeding, infection, device issues, and, uncommonly, nerve injury or the later need for a fusion. Coflex suits specific situations — not every stenosis patient. Dr. Greenwald reviews candidacy and risks in detail.
For well-selected patients, decompression with Coflex relieves stenosis symptoms while preserving motion and avoiding the larger footprint of a fusion. The key is candidacy — which is why a careful evaluation by a surgeon who also performs decompression and fusion matters. We set clear, individualized expectations.
Life Beyond the Pain

Under general anesthesia, through a minimally invasive posterior approach, the nerves are decompressed by removing the bone and thickened ligament crowding them. The Coflex U-shaped spacer is then placed between the spinous processes at that level to add gentle stabilization while preserving motion. No pedicle screws or fusion are required.
Your procedure is performed by Dr. Greenwald at an affiliated, accredited surgical facility — not in the clinic office — with a full surgical and anesthesia team.
| Timeframe | What to expect |
|---|---|
| First week | Home the same day or after a short stay. Short, frequent walks; avoid heavy lifting, bending, and twisting; keep the incision clean and dry. |
| Weeks 2–6 | Activity increases steadily; many patients return to light or desk work; physical therapy typically begins to rebuild strength and mobility. |
| Months 2–3 | Resume most normal activities; symptoms keep improving as the nerves recover. |
| Month 6 | Most patients reach full recovery. |
Because it avoids a full fusion, recovery can be quicker than a fusion for suitable patients, with the benefits of a minimally invasive decompression. Your timeline depends on the levels treated and your health.
Cost and coverage shouldn't stand between you and relief. Desert Spine and Pain welcomes out-of-network patients and will walk you through what your evaluation and treatment are likely to involve before anything is scheduled — so there are no surprises. We'll help you understand your benefits and options, whether you're using insurance, paying out-of-pocket, or being treated under a personal-injury claim.
Patients travel to Desert Spine and Pain from across Arizona for specialist spine care — because the right spine surgeon is worth the drive. We welcome patients from Phoenix and communities throughout the Valley and beyond:
…and surrounding Arizona communities. Out-of-network patients are welcome, and no referral is required — schedule a consultation.
Choosing the right spine specialist in Phoenix matters. At Desert Spine and Pain, your care is led by Dr. David L. Greenwald, MD, FAANS, FACS — a physician who is both a board-certified spine surgeon and a neurosurgeon. That dual expertise is rare, and it means one expert can guide you across the full spectrum of care — from a simple injection to complex surgery — and recommend what is genuinely best for you, whether you need a spine doctor for conservative care or a surgeon when surgery is truly the answer.
A rare dual credential — so the specialist who treats you can also perform surgery if it's ever needed.
Most patients get better without surgery. We only advance when your condition truly requires it.
No referral needed. We make it straightforward to see a top spine specialist, even out-of-network.
24/7 concierge response and close coordination with personal-injury attorneys.
See a dual board-certified spine surgeon and neurosurgeon in Phoenix to find out whether decompression with Coflex is right for you.
Book a Consultation — (602) 566-9500What is a Coflex device?
It's a small U-shaped implant placed between the spinous processes after a decompression. It adds gentle stabilization and helps keep the canal open while preserving motion — without a full fusion.
How is it different from a fusion?
A fusion permanently joins the segment with screws and bone graft; Coflex preserves motion and avoids that larger surgery. For a suitable patient, it's a middle-ground option.
Am I a candidate?
Coflex suits lumbar stenosis at one or two levels in patients who need decompression plus some stabilization and have suitable anatomy. A careful evaluation determines whether it fits you.
Is it minimally invasive?
Yes, through a minimally invasive posterior approach, which supports a quicker recovery than a fusion.
Do I need a referral in Phoenix?
No. You can schedule directly with our Phoenix spine specialists, and we welcome out-of-network patients.




Dr. David L. Greenwald, MD
Neuro-Spine Surgeon


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If you’re experiencing lower back or leg pain caused by lumbar spinal stenosis, Lumbar Decompression with Coflex Placement may be the ideal solution to relieve pressure and preserve motion. Dr. Greenwald and his dedicated team will carefully evaluate your condition, review imaging, and determine if you’re a good candidate for this advanced, minimally invasive procedure. Every step you take toward expert spine care brings you closer to comfort, flexibility, and a pain-free life. Schedule your consultation today and learn how Dr. Greenwald’s expertise with Coflex can help you move freely again.



Dr. David L. Greenwald, MD, FAANS, FACS, is a board-certified spine surgeon and neurosurgeon with advanced expertise in lumbar decompression with coflex. He commonly uses it to treat conditions such as spinal stenosis, which can cause pain, numbness, or weakness. Using advanced, minimally invasive techniques whenever possible, Dr. Greenwald relieves nerve compression and instability while protecting healthy tissue and preserving spinal stability. His skill and patient-centered approach help patients throughout the greater Phoenix, Arizona area experience meaningful pain relief, reduced recovery time, and restored mobility.


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