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25-Year back surgery study: when is less really more?

NCT ID NCT07489508

Knowledge-focused Sponsor: University of Valencia Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked back at 25 years of medical records from 246 patients aged 50+ with lumbar spinal stenosis (a narrowing in the spine that can cause leg pain and trouble walking). Researchers compared patients who had a less invasive surgery (tubular decompression, with or without a nerve-blocking procedure) to those who had a more extensive spinal fusion (TLIF). The goal was to see which patients did well with the simpler surgery and which ones later needed fusion. No new treatments were given; the study simply analyzed past data to help guide future surgical decisions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

246 people

The number who actually took part.

Started

Jan 2000

Finished

Mar 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Consecutive patients aged 50 years or older treated surgically for lumbar spinal stenosis at the General University Hospital of Valencia between 2000 and 2025. The population includes patients treated with tubular decompression alone, tubular decompression followed by rhizotomy, or primary TLIF decompression and fusion, according to routine clinical practice.

Ages

50 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 50 years or older. * Diagnosis of lumbar spinal stenosis confirmed by clinical assessment and imaging. * Underwent one of the following standard-of-care surgical pathways between 2000 and 2025: 1. Minimally invasive unilateral tubular decompression, or 2. Minimally invasive unilateral tubular decompression followed by multisegmental percutaneous rhizotomy, or 3. Primary transfacetal TLIF decompression and fusion. * Complete medical records available with at least 6 months of postoperative follow-up. * Surgery and follow-up performed at the General University Hospital of Valencia. Exclusion Criteria: * Initial treatment consisting of lumbar fusion or pedicle screw instrumentation (except for patients in the primary TLIF decompression-and-fusion cohort). * Lumbar spinal stenosis secondary to trauma, tumor, infection, or prior surgery at the same level. * Degenerative spondylolisthesis grade III or higher. * Missing or incomplete clinical records preventing adequate outcome assessment. * Contraindications to surgery that altered the standard surgical pathway.

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Conditions

The condition(s) this trial relates to.

lumbar spinal stenosis spinal stenosis spondylolisthesis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Degenerative lumbar spondylolisthesis Lumbar spinal stenosis Neurogenic claudication

Contacts and locations

Locations

  • Consorcio Hospital General Universitario de Valencia

    Valencia, Valencia, 46015, Spain

  • Hospital General Universitario de Valencia

    Valencia, Valencia, 46015, Spain

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