{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retrospective+Studies",
    "query": {
      "condition": "Retrospective Studies"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 744,
    "total_pages": 75,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retrospective+Studies&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T06:44:18.605Z",
  "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": "NCT02636673",
      "title": "Robotic-assisted Versus Laparoscopic Sigmoid Resection",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sigmoid Diseases"
      ],
      "interventions": [
        {
          "name": "Sigmoid Resection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Intuitive Surgical",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 518,
      "start_date": "2015-11",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2016-08-30",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 6,
      "location_summary": "Scottsdale, Arizona • Miami, Florida • Tampa, Florida + 3 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "New Lenox",
          "state": "Illinois"
        },
        {
          "city": "Mount Kisco",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02636673"
    },
    {
      "nct_id": "NCT03152357",
      "title": "A Retrospective Study to Evaluate the ConforMIS iUni, iDuo & iTotal® KRS",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteoarthritis, Knee",
        "Knee Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "ConforMIS iUni, iDuo, or iTotal (CR)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Restor3D",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 950,
      "start_date": "2017-04-01",
      "completion_date": "2019-12-31",
      "has_results": false,
      "last_update_posted_date": "2023-10-25",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "Boynton Beach, Florida",
      "locations": [
        {
          "city": "Boynton Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03152357"
    },
    {
      "nct_id": "NCT03065257",
      "title": "Endoscopic Resection Multicenter Registry",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gastrointestinal Neoplasms",
        "Gastrointestinal Disease",
        "Gastric Cancer",
        "Gastric Neoplasm",
        "Gastric Polyp",
        "Esophageal Neoplasms",
        "Duodenal Neoplasms",
        "Duodenal Polyp",
        "Stomach Neoplasm",
        "Stomach Polyp",
        "Neoplasms",
        "Colon Polyp",
        "Colon Neoplasm"
      ],
      "interventions": [
        {
          "name": "Endoscopic Resection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2017-03-15",
      "completion_date": "2020-04",
      "has_results": false,
      "last_update_posted_date": "2017-04-25",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03065257"
    },
    {
      "nct_id": "NCT07170566",
      "title": "A Retrospective, Observational Study of the Real-world Safety and Performance of InnovaMatrix® AC at a Single Centre",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Wound Heal"
      ],
      "interventions": [
        {
          "name": "innovaMatrix AC",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "ConvaTec Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 67,
      "start_date": "2024-05-01",
      "completion_date": "2025-08-05",
      "has_results": false,
      "last_update_posted_date": "2025-09-15",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "Mt. Pleasant, South Carolina",
      "locations": [
        {
          "city": "Mt. Pleasant",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07170566"
    },
    {
      "nct_id": "NCT03132428",
      "title": "Registry to Evaluate INOmax in Newborn Babies With Pulmonary Hypertension",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Hypertension of Newborn"
      ],
      "interventions": [
        {
          "name": "INOmax",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mallinckrodt",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "27 Weeks",
        "maximum_age": "40 Weeks",
        "sex": "ALL",
        "summary": "27 Weeks to 40 Weeks"
      },
      "enrollment_count": 140,
      "start_date": "2017-07-27",
      "completion_date": "2020-02-11",
      "has_results": false,
      "last_update_posted_date": "2020-06-18",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 30,
      "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Loma Linda, California + 27 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03132428"
    },
    {
      "nct_id": "NCT02825602",
      "title": "Vietnam Era Health Retrospective Observational Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Aging",
        "Combat Disorders"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Veteran Affairs Office of Patient Care Services",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "58 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "58 Years and older"
      },
      "enrollment_count": 24306,
      "start_date": "2016-07",
      "completion_date": "2019-12",
      "has_results": false,
      "last_update_posted_date": "2019-04-24",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02825602"
    },
    {
      "nct_id": "NCT07038395",
      "title": "Retrospective Analysis of the Time Elements for Different Workflow Scenarios During Femtosecond Laser-assisted Cataract Surgery (FLACS) From the Surgeon, Staff, and Patient Perspectives.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cataract"
      ],
      "interventions": [
        {
          "name": "workflow",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "LensAR Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2023-06-09",
      "completion_date": "2024-06-29",
      "has_results": false,
      "last_update_posted_date": "2025-06-26",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "Gainesville, Georgia",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07038395"
    },
    {
      "nct_id": "NCT04751422",
      "title": "Medical Data Collection for the Evaluation of Radiofrequency Ablation and Cement Augmentation for the Treatment of Secondary Metastases to the Spine",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Metastatic Malignant Neoplasm in the Spine"
      ],
      "interventions": [
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 500,
      "start_date": "2020-11-13",
      "completion_date": "2023-09-30",
      "has_results": false,
      "last_update_posted_date": "2023-04-12",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04751422"
    },
    {
      "nct_id": "NCT04721366",
      "title": "A Study of Velaglucerase Alfa (VPRIV) Given as Standard Patient Care in Young Children With Gaucher Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gaucher Disease"
      ],
      "interventions": [
        {
          "name": "Standard of Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Takeda",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "5 Years",
        "sex": "ALL",
        "summary": "Up to 5 Years"
      },
      "enrollment_count": 11,
      "start_date": "2021-01-08",
      "completion_date": "2023-04-17",
      "has_results": false,
      "last_update_posted_date": "2024-03-29",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "Fairfax, Virginia",
      "locations": [
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04721366"
    },
    {
      "nct_id": "NCT03790124",
      "title": "Post-dural Puncture Headache: A Retrospective Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obstetric Anesthesia Problems",
        "Headache",
        "Epidural; Anesthesia, Headache"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Augusta University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 50,
      "start_date": "2019-02-01",
      "completion_date": "2019-03-30",
      "has_results": false,
      "last_update_posted_date": "2019-06-19",
      "last_synced_at": "2026-05-22T06:44:18.605Z",
      "location_count": 1,
      "location_summary": "Augusta, Georgia",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03790124"
    }
  ]
}