{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Spondylolisthesis%2C+Grade+1",
    "query": {
      "condition": "Spondylolisthesis, Grade 1"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-21T22:55:01.229Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT03381677",
      "title": "Pedicle Osteotomy for Stenosis Trial",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lumbar Spinal Stenosis",
        "Spondylolisthesis, Grade 1",
        "Neurogenic Claudication"
      ],
      "interventions": [
        {
          "name": "Pedicle Lengthening Osteotomy with Altum® Device",
          "type": "DEVICE"
        },
        {
          "name": "Control",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Innovative Surgical Designs",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 344,
      "start_date": "2017-10-26",
      "completion_date": "2024-10-26",
      "has_results": false,
      "last_update_posted_date": "2020-08-03",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 1,
      "location_summary": "Bryn Mawr, Pennsylvania",
      "locations": [
        {
          "city": "Bryn Mawr",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03381677"
    },
    {
      "nct_id": "NCT00109213",
      "title": "Greenwich Lumbar Stenosis SLIP Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Spinal Stenosis",
        "Spondylolisthesis"
      ],
      "interventions": [
        {
          "name": "Lumbar Laminectomy with Instrumented Pedicle Screw Fusion",
          "type": "PROCEDURE"
        },
        {
          "name": "Lumbar Laminectomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Greenwich Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "50 Years to 80 Years"
      },
      "enrollment_count": 66,
      "start_date": "2002-05",
      "completion_date": "2014-10",
      "has_results": false,
      "last_update_posted_date": "2015-12-03",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 5,
      "location_summary": "Greenwich, Connecticut • Boston, Massachusetts • Burlington, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Greenwich",
          "state": "Connecticut"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Burlington",
          "state": "Massachusetts"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00109213"
    },
    {
      "nct_id": "NCT04584619",
      "title": "Idys™ TLIF 3DTi Post Market Clinical Follow-up",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Degenerative Disc Disease",
        "Grade 1 Spondylolisthesis"
      ],
      "interventions": [
        {
          "name": "Spine fusion surgery with Clariance Idys TLIF 3DTi",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Clariance",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2020-10-01",
      "completion_date": "2023-12-31",
      "has_results": false,
      "last_update_posted_date": "2021-11-29",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 1,
      "location_summary": "College Station, Texas",
      "locations": [
        {
          "city": "College Station",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04584619"
    },
    {
      "nct_id": "NCT02704689",
      "title": "AccuLIF® PROSPECTIVE PATIENT OUTCOMES STUDY",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Degenerative Disc Disease",
        "Spondylolisthesis, Grade 1",
        "Retrolisthesis"
      ],
      "interventions": [
        {
          "name": "AccuLIF expandable TLIF cage",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Stryker Spine",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 9,
      "start_date": "2016-06-08",
      "completion_date": "2017-01-19",
      "has_results": true,
      "last_update_posted_date": "2018-04-24",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02704689"
    },
    {
      "nct_id": "NCT03928041",
      "title": "A Clinical Study to Evaluate Safety and Performance of PEEK-OPTIMA™ HA Enhanced Interbody Cages in the Lumbar Spine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Degenerative Disc Disease Lumbar",
        "Spondylolisthesis, Grade 1"
      ],
      "interventions": [
        {
          "name": "Device: EVOS Lumbar Interbody System (EVOS-HA)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Invibio Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2019-06-27",
      "completion_date": "2023-09-25",
      "has_results": false,
      "last_update_posted_date": "2025-04-30",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 2,
      "location_summary": "Charlotte, North Carolina • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03928041"
    },
    {
      "nct_id": "NCT06415110",
      "title": "A Prospective Analysis of the Efficacy of Allosync Expand and Autograft Bone Graft in Open Lumbar Spinal Fusion",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Spondylolisthesis, Grade 1"
      ],
      "interventions": [
        {
          "name": "Allosync Expand",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Research Source",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2024-06-05",
      "completion_date": "2027-05",
      "has_results": false,
      "last_update_posted_date": "2025-08-22",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 1,
      "location_summary": "Southfield, Michigan",
      "locations": [
        {
          "city": "Southfield",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06415110"
    },
    {
      "nct_id": "NCT01220921",
      "title": "Neurosurgery Patient Outcomes in Treating Spinal Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Symptomatic Lumbar Disc Herniation",
        "Symptomatic Grade I Lumbar Spondylolisthesis"
      ],
      "interventions": [
        {
          "name": "Lumbar Discectomy",
          "type": "PROCEDURE"
        },
        {
          "name": "Single-level lumbar fusion",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Greenwich Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 198,
      "start_date": "2010-09",
      "completion_date": "2012-09",
      "has_results": false,
      "last_update_posted_date": "2015-12-04",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 12,
      "location_summary": "San Francisco, California • Greenwich, Connecticut • New Haven, Connecticut + 9 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Greenwich",
          "state": "Connecticut"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Burlington",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01220921"
    },
    {
      "nct_id": "NCT02626624",
      "title": "Safety and Efficacy of the CarboClear Pedicle Screw System",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Degenerative Disc Disease",
        "Spondylolisthesis, Grade 1"
      ],
      "interventions": [
        {
          "name": "Implantation of the CarboClear Pedicle Screw System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CarboFix Orthopedics Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "72 Years",
        "sex": "ALL",
        "summary": "21 Years to 72 Years"
      },
      "enrollment_count": 57,
      "start_date": "2015-12-27",
      "completion_date": "2022-12-28",
      "has_results": true,
      "last_update_posted_date": "2025-04-27",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 5,
      "location_summary": "Boston, Massachusetts • Rochester, Minnesota • Brooklyn, New York + 2 more",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Brooklyn",
          "state": "New York"
        },
        {
          "city": "Akron",
          "state": "Ohio"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02626624"
    },
    {
      "nct_id": "NCT03570801",
      "title": "SLIP II Registry: Spinal Laminectomy Versus Instrumented Pedicle Screw Fusion",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lumbar Spondylolisthesis",
        "Grade 1 Spondylolisthesis",
        "Lumbar Spinal Stenosis",
        "Degenerative Spondylolisthesis"
      ],
      "interventions": [
        {
          "name": "Expert Panel Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Lahey Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 662,
      "start_date": "2017-10-17",
      "completion_date": "2028-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-29",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 16,
      "location_summary": "Scottsdale, Arizona • San Francisco, California • Miami, Florida + 12 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Urbana",
          "state": "Illinois"
        },
        {
          "city": "Carmel",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03570801"
    },
    {
      "nct_id": "NCT01944345",
      "title": "Patient Registry to Observe Outcomes Following Implantation of the VariLift Interbody Fusion Device",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prolapsed Lumbar Disc",
        "Prolapsed Cervical Disc",
        "Intervertebral Disc Degeneration",
        "Spondylolisthesis, Grade 1",
        "Intervertebral Disc Displacement"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Wenzel Spine",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 69,
      "start_date": "2013-06",
      "completion_date": "2015-09",
      "has_results": true,
      "last_update_posted_date": "2016-05-17",
      "last_synced_at": "2026-05-21T22:55:01.229Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts • San Antonio, Texas",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01944345"
    }
  ]
}