{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retrolisthesis",
    "query": {
      "condition": "Retrolisthesis"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-21T23:39:06.177Z",
  "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": "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": "2026-05-21T23:39:06.177Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02704689"
    },
    {
      "nct_id": "NCT00759057",
      "title": "A Clinical Study of the Dynesys(R) Spinal System",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Degenerative Spondylolisthesis or Retrolisthesis",
        "Spinal Stenosis",
        "Stenosing Lesion."
      ],
      "interventions": [
        {
          "name": "Posterior Pedicle Screw System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "20 Years to 80 Years"
      },
      "enrollment_count": 399,
      "start_date": "2003-03",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2012-06-28",
      "last_synced_at": "2026-05-21T23:39:06.177Z",
      "location_count": 26,
      "location_summary": "Scottsdale, Arizona • Tucson, Arizona • Los Angeles, California + 23 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Modesto",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00759057"
    },
    {
      "nct_id": "NCT04911257",
      "title": "Interbody Systems: Post Market Clinical Follow-up Study",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Degenerative Disc Disease"
      ],
      "interventions": [
        {
          "name": "Cervical or Lumbar Spinal fusion",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "K2M, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 28,
      "start_date": "2021-12-07",
      "completion_date": "2025-03-21",
      "has_results": false,
      "last_update_posted_date": "2025-04-18",
      "last_synced_at": "2026-05-21T23:39:06.177Z",
      "location_count": 4,
      "location_summary": "Shreveport, Louisiana • Cleveland, Ohio • Oklahoma City, Oklahoma + 1 more",
      "locations": [
        {
          "city": "Shreveport",
          "state": "Louisiana"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Falls Church",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04911257"
    },
    {
      "nct_id": "NCT01415908",
      "title": "INFUSE®Bone Graft in Transforaminal Lumbar Interbody Fusion for Degenerative Disease of Lumbosacral Spine",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Lumbar Spine Degeneration"
      ],
      "interventions": [
        {
          "name": "INFUSE Bone Graft",
          "type": "DEVICE"
        },
        {
          "name": "Iliac Crest Bone Graft",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Medtronic Spinal and Biologics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2011-07",
      "completion_date": "2015-01",
      "has_results": true,
      "last_update_posted_date": "2016-02-18",
      "last_synced_at": "2026-05-21T23:39:06.177Z",
      "location_count": 5,
      "location_summary": "Mesa, Arizona • Los Angeles, California • Gulf Breeze, Florida + 2 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Gulf Breeze",
          "state": "Florida"
        },
        {
          "city": "Fort Wayne",
          "state": "Indiana"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01415908"
    },
    {
      "nct_id": "NCT04416321",
      "title": "A Clinical Study to Evaluate Safety and Performance of PEEK-OPTIMA™ HA Enhanced.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Degenerative Disc Disease",
        "Spondylolisthesis",
        "Retrolisthesis"
      ],
      "interventions": [
        {
          "name": "Surgery with the Keos Lumbar Interbody Fusion Device",
          "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": 25,
      "start_date": "2021-07-01",
      "completion_date": "2026-01-27",
      "has_results": false,
      "last_update_posted_date": "2026-01-29",
      "last_synced_at": "2026-05-21T23:39:06.177Z",
      "location_count": 1,
      "location_summary": "Lancaster, Pennsylvania",
      "locations": [
        {
          "city": "Lancaster",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04416321"
    },
    {
      "nct_id": "NCT02805985",
      "title": "Post-market Surveillance Study of FLXfit™ TLIF Interbody Fusion Device",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Degenerative Disc Disease",
        "Spondylolisthesis",
        "Retrolisthesis"
      ],
      "interventions": [
        {
          "name": "FLXfit™ TLIF Interbody Fusion Device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Expanding Orthopedics Ltd.",
      "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": 30,
      "start_date": "2016-10",
      "completion_date": "2018-06",
      "has_results": false,
      "last_update_posted_date": "2017-01-25",
      "last_synced_at": "2026-05-21T23:39:06.177Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02805985"
    }
  ]
}