Lumbar Spine
Lumbar Laminotomy & Medial Facetectomy
A focused decompression that opens a small window of bone to free a crowded nerve — preserving the midline structures a full laminectomy removes.
What it is
A laminotomy removes a small window of the lamina — rather than the whole back wall of the spinal canal — over the spot where a nerve is being pinched. A medial facetectomy trims the inner edge of the overgrown facet joint, which is often the structure actually doing the pinching in the lateral recess.
The spinous process, the midline ligaments, and most of the lamina and facet joint stay. It is the least disruptive way to decompress a nerve when the narrowing is focal rather than circumferential.
Why this procedure when surgery is needed
When stenosis is concentrated in the lateral recess — where the nerve root turns to exit — a full laminectomy removes more bone than the problem requires. A laminotomy with medial facetectomy takes the pressure off exactly where it exists and leaves the rest of the architecture alone.
Preserving the midline structures and most of the facet joint matters: it means less muscle disruption, a faster recovery, and a lower chance of creating the instability that can follow a wider decompression. The principle is the same one that runs through this practice — remove what is causing the problem, and nothing else.
What to expect
Surgery typically takes about an hour per level.
Most patients go home the same day.
Walking the day of surgery is encouraged and expected.
Return to desk work in 1–2 weeks; driving when off narcotics.
Heavy lifting and repetitive bending restricted for 4–6 weeks.
Leg symptoms typically improve early; numbness from a long-compressed nerve can take weeks to months to settle.
Risks and how we reduce them
A laminotomy is among the smaller operations in spine surgery, and its risk profile reflects that — but it still means working millimeters from the nerve, and honesty about that is owed.
Expected, temporary effects
Incisional and back soreness. Soreness at the small incision and surrounding muscles for the first days to weeks, settling as the tissue heals.
Lingering numbness or tingling. A nerve compressed for months does not always quiet down immediately; some numbness or tingling can persist after the pain is gone and usually fades over weeks to months.
Serious risks
Incomplete relief or recurrent stenosis. A focal decompression treats focal narrowing; stenosis can persist or recur at the same or a neighboring level and occasionally requires a wider decompression later.
Dural tear (CSF leak). A small tear in the lining around the nerves can occur and is repaired at the time of surgery; it occasionally requires a short period of lying flat afterward.
Nerve-root injury. Direct injury to the nerve root is rare but can cause new weakness, numbness, or pain. The operating microscope and careful technique are used to minimize this risk.
Infection. Wound or deeper infection is uncommon and is reduced with sterile technique and antibiotics when appropriate.
Prepare and recover
Handouts that fit this surgery. These are being finalized in physician review — visit the patient education library to see what is available, and always follow your own surgeon's specific protocol.
Prepare for this surgery
Recover from this surgery
Approach
- Posterior approach through a small incision, often with a tubular retractor
- Operating microscope for nerve visualization
- Bone removed only over the compressed segment of nerve
- Facet joint preserved except for its overgrown inner margin
- Outpatient, multimodal pain control to minimize opioid use
Typical indications
- Lateral recess stenosis with matching single-root leg symptoms
- Focal stenosis at one or two levels without instability
- Failed appropriate conservative care
- Progressive motor weakness in the affected nerve distribution
Alternatives we considered
- Continued conservative care for mild or stable symptoms
- Epidural steroid injection for acute flares
- Full lumbar laminectomy if the stenosis is broader than a focal window can address
- Fusion (TLIF/PLIF) if instability or slip is also present
Related conditions
This procedure is most often performed for:
Medical review in progress. Author: practice editorial team.
The information on this page is general patient education and is not a substitute for individualized medical advice. For urgent symptoms, call 911 or go to the nearest emergency department. For non-urgent questions, call (785) 368-0767 during clinic hours.
Not sure whether a symptom needs a call? When to call after surgery