SLIP II Registry: Spinal Laminectomy Versus Instrumented Pedicle Screw Fusion
Public ClinicalTrials.gov record NCT03570801. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
SLIP II Registry: Spinal Laminectomy to Laminectomy With Instrumented Pedicle Screw Fusion for Lumbar Stenosis With Grade I Spondylolisthesis
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of the project is to perform an RCT comparing patient satisfaction and outcome with or without the use of an expert panel. The purpose is also to create a registry to compare the effectiveness of decompression alone versus decompression with fusion for patients with degenerative grade I spondylolisthesis and symptomatic lumbar spinal stenosis. Primary analysis will focus on the patients' improvement from baseline patient-reported outcome questionnaires. In addition, the SLIP II registry aims to (i) develop an algorithm which could identify cases in which surgical experts are likely to recommend one treatment (i.e. \>80% of experts recommend one form of treatment) and (ii) develop a radiology-based machine learning algorithm that would prospectively classify patients as either 'stable' or 'unstable.' In addition to patient reported outcomes, step counts will be collected in order to determine the correlation of step count with patient-reported outcomes (ODI and EQ-5D) and the need for re-operation. This registry portion of the study aims to prospectively collect comparative data for these patients treated with either decompression alone or decompression with fusion.
Study identification
- NCT ID
- NCT03570801
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 662 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 17, 2017 (Actual)
- Primary completion
- Dec 31, 2028 (Estimated)
- Completion
- Dec 31, 2028 (Estimated)
- Last update posted
- Oct 21, 2026
2017 – 2028
United States locations
- U.S. sites
- 16
- U.S. states
- 13
- U.S. cities
- 15
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Barrow Brain and Spine | Scottsdale | Arizona | 85251 | — |
| University of California, San Fransisco | San Francisco | California | 94143 | — |
| University of Miami | Miami | Florida | 33125 | — |
| Carle Neurosciences Institute | Urbana | Illinois | 61801 | — |
| Goodman Campbell Brain & Spine | Carmel | Indiana | 46032 | — |
| Norton Leatherman Spine Center | Louisville | Kentucky | 40202 | — |
| Massachusetts General Hospital | Boston | Massachusetts | 02114 | — |
| Lahey Hospital & Medical Center | Burlington | Massachusetts | 01803 | — |
| University of Minnesota | Minneapolis | Minnesota | 55455 | — |
| Mayo Clinic | Rochester | Minnesota | 55902 | — |
| Hospital for Special Surgery | New York | New York | 10021 | — |
| Columbia University | New York | New York | 10027 | — |
| Cleveland Clinic Foundation | Cleveland | Ohio | 44195 | — |
| University of Pittsburgh | Pittsburgh | Pennsylvania | 15213 | — |
| University of Utah Hospital | Salt Lake City | Utah | 84132 | — |
| University of Wisconsin | Madison | Wisconsin | 53792 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 1 non-U.S. site.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03570801, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Oct 21, 2026 · Synced Oct 21, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT03570801 live on ClinicalTrials.gov.