{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Knee+Osteoarthritis+%28Knee+OA%29&page=8",
    "query": {
      "condition": "Knee Osteoarthritis (Knee OA)",
      "page": 8
    },
    "page_size": 10
  },
  "pagination": {
    "page": 8,
    "page_size": 10,
    "total_count": 195,
    "total_pages": 20,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Knee+Osteoarthritis+%28Knee+OA%29&page=9&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Knee+Osteoarthritis+%28Knee+OA%29&page=7&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-13T21:37:25.850Z",
  "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": "NCT00704847",
      "title": "Efficacy and Safety of Oral Salmon Calcitonin in Patients With Knee Osteoarthritis (OA 2 Study)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Oral Salmon Calcitonin",
          "type": "DRUG"
        },
        {
          "name": "Oral Salmon Calcitonin (Placebo)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Nordic Bioscience A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "51 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "51 Years to 80 Years"
      },
      "enrollment_count": 1030,
      "start_date": "2008-06",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2019-04-24",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 6,
      "location_summary": "Tuscaloosa, Alabama • Sacramento, California • Chicago, Illinois + 3 more",
      "locations": [
        {
          "city": "Tuscaloosa",
          "state": "Alabama"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "City of Saint Peters",
          "state": "Missouri"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00704847"
    },
    {
      "nct_id": "NCT01709214",
      "title": "Safety and Efficacy Study of GRT6005 in Patients With Osteoarthritis (OA) Knee Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Moderate to Severe Chronic Pain Due to Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "Cebranopadol (GRT6005) Low-Dose Range",
          "type": "DRUG"
        },
        {
          "name": "Cebranopadol (GRT6005) High-Dose Range",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone CR",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tris Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 619,
      "start_date": "2012-12-04",
      "completion_date": "2014-04-04",
      "has_results": false,
      "last_update_posted_date": "2021-07-15",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 83,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 74 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01709214"
    },
    {
      "nct_id": "NCT00306774",
      "title": "Vitamin D to Slow Progression of Knee Osteoarthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "Vitamin D (cholecalciferol)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Tufts Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "45 Years to 90 Years"
      },
      "enrollment_count": 146,
      "start_date": "2006-03",
      "completion_date": "2009-06",
      "has_results": false,
      "last_update_posted_date": "2011-09-23",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00306774"
    },
    {
      "nct_id": "NCT02723929",
      "title": "Effects of tDCS and tUS on Pain Perception in OA of the Knee",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [],
      "conditions": [
        "Chronic Pain",
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "active low-intensity transcranial electrical stimulation/active transcranial ultrasound",
          "type": "DEVICE"
        },
        {
          "name": "Sham low-intensity transcranial electrical stimulation/sham transcranial ultrasound",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Spaulding Rehabilitation Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 64,
      "start_date": "2016-09",
      "completion_date": "2026-12-07",
      "has_results": true,
      "last_update_posted_date": "2025-09-29",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 1,
      "location_summary": "Charlestown, Massachusetts",
      "locations": [
        {
          "city": "Charlestown",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02723929"
    },
    {
      "nct_id": "NCT07223359",
      "title": "Photographic Evidence on Total Knee Arthroplasty Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis (OA) of the Knee"
      ],
      "interventions": [
        {
          "name": "Photographic Evidence of Postoperative Knee Range of Motion",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard Postoperative Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Loyola University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 59,
      "start_date": "2020-01-01",
      "completion_date": "2021-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-10-31",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 2,
      "location_summary": "Maywood, Illinois • Melrose Park, Illinois",
      "locations": [
        {
          "city": "Maywood",
          "state": "Illinois"
        },
        {
          "city": "Melrose Park",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07223359"
    },
    {
      "nct_id": "NCT01111045",
      "title": "Dose Finding Study of Bone Morphogenetic Protein 7 (BMP-7) in Subjects With Osteoarthritis (OA) of the Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "Bone morphogenetic protein 7",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stryker Biotech",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 355,
      "start_date": "2010-04",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2012-02-01",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 25,
      "location_summary": "Glendale, Arizona • Tucson, Arizona • Palo Alto, California + 20 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Tustin",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01111045"
    },
    {
      "nct_id": "NCT03895840",
      "title": "The Effect of Intra-articular Bilateral Knee Injections of Zilretta on Performance Measures in Adults With Knee OA",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Knee Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Zilretta",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 70,
      "start_date": "2018-03-19",
      "completion_date": "2021-05-03",
      "has_results": true,
      "last_update_posted_date": "2022-05-05",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03895840"
    },
    {
      "nct_id": "NCT01619839",
      "title": "A Phase 2 Study To Assess The Efficacy, Tolerability, And Safety OF NKTR-181 In Subjects With Chronic OA Knee Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "NKTR-181",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Nektar Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 296,
      "start_date": "2012-06",
      "completion_date": "2013-09",
      "has_results": true,
      "last_update_posted_date": "2021-08-02",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 34,
      "location_summary": "Mobile, Alabama • Tucson, Arizona • Garden Grove, California + 29 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01619839"
    },
    {
      "nct_id": "NCT03349645",
      "title": "Open Label Extension to Assess the Safety of Long-Term Treatment With Ampion for Severe Osteoarthritis (OA) of the Knee",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Severe Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "4 mL injection of AMPION™",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Ampio Pharmaceuticals. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 94,
      "start_date": "2017-12-08",
      "completion_date": "2018-10-04",
      "has_results": true,
      "last_update_posted_date": "2022-10-03",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • Encinitas, California • Fullerton, California + 8 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Thousand Oaks",
          "state": "California"
        },
        {
          "city": "Marietta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03349645"
    },
    {
      "nct_id": "NCT05462990",
      "title": "A Proof-of-concept Study to Examine QUC398 in Participants With Knee OA",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "QUC398",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "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": 101,
      "start_date": "2022-11-09",
      "completion_date": "2025-04-08",
      "has_results": true,
      "last_update_posted_date": "2026-03-31",
      "last_synced_at": "2026-10-13T21:37:25.850Z",
      "location_count": 3,
      "location_summary": "Tampa, Florida • Boston, Massachusetts • Morehead City, North Carolina",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Morehead City",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05462990"
    }
  ]
}