{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Knee+Arthritis%2C+Osteoarthritis",
    "query": {
      "condition": "Knee Arthritis, Osteoarthritis"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 1199,
    "total_pages": 120,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Knee+Arthritis%2C+Osteoarthritis&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T20:39:02.146Z",
  "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": "NCT01397981",
      "title": "Gait Retraining to Reduce Knee Osteoarthritis Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "Gait retraining",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Stanford University",
      "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": 25,
      "start_date": "2011-07",
      "completion_date": "2012-11",
      "has_results": false,
      "last_update_posted_date": "2013-03-06",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01397981"
    },
    {
      "nct_id": "NCT03691844",
      "title": "AMZ001 for the Treatment of Knee Osteoarthritis Symptoms",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "AMZ001",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Comparator",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amzell",
      "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": 444,
      "start_date": "2018-10-04",
      "completion_date": "2019-07-09",
      "has_results": true,
      "last_update_posted_date": "2020-10-06",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 3,
      "location_summary": "Milford, Connecticut • The Villages, Florida • Williamsville, New York",
      "locations": [
        {
          "city": "Milford",
          "state": "Connecticut"
        },
        {
          "city": "The Villages",
          "state": "Florida"
        },
        {
          "city": "Williamsville",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03691844"
    },
    {
      "nct_id": "NCT04885972",
      "title": "Study to Evaluate Intra-articular Resiniferatoxin to Treat Moderate to Severe Pain From Knee Osteoarthritis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis, Knee",
        "Knee Osteoarthritis",
        "Knee Pain Chronic"
      ],
      "interventions": [
        {
          "name": "Resiniferatoxin",
          "type": "DRUG"
        },
        {
          "name": "Zilretta",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sorrento Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 124,
      "start_date": "2021-11-15",
      "completion_date": "2023-11",
      "has_results": false,
      "last_update_posted_date": "2023-01-17",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 6,
      "location_summary": "La Mesa, California • Pasadena, California • Oak Brook, Illinois + 3 more",
      "locations": [
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        },
        {
          "city": "Oak Brook",
          "state": "Illinois"
        },
        {
          "city": "Edgewood",
          "state": "Kentucky"
        },
        {
          "city": "Bellaire",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04885972"
    },
    {
      "nct_id": "NCT04533711",
      "title": "Physical Activity Pathway for Patients With Osteoarthritis in Primary Care (OA-PCP) (R33)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "OA-PCP Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Attention Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 240,
      "start_date": "2020-11-30",
      "completion_date": "2023-12-04",
      "has_results": true,
      "last_update_posted_date": "2024-10-24",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04533711"
    },
    {
      "nct_id": "NCT04187092",
      "title": "Knee Biofeedback Rehabilitation Interface for Game-based Home Therapy for Patients With Knee Osteoarthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteo Arthritis Knee"
      ],
      "interventions": [
        {
          "name": "KneeBright Group",
          "type": "OTHER"
        },
        {
          "name": "Standard Rehabilitation group",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "40 Years to 75 Years"
      },
      "enrollment_count": 38,
      "start_date": "2020-01-01",
      "completion_date": "2021-07-28",
      "has_results": true,
      "last_update_posted_date": "2023-02-21",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04187092"
    },
    {
      "nct_id": "NCT01135030",
      "title": "Anterior Referencing Versus Posterior Referencing in Minimally Invasive Total Knee Arthroplasty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Total knee",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Heekin Orthopedic Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 100,
      "start_date": "2006-10",
      "completion_date": "2012-01",
      "has_results": false,
      "last_update_posted_date": "2012-02-06",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01135030"
    },
    {
      "nct_id": "NCT06691633",
      "title": "Postoperative Pain and Analgesic Requirements After Preoperative Methadone for Primary TKA",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osteoarthritis (OA) of the Knee"
      ],
      "interventions": [
        {
          "name": "Preoperative Methadone",
          "type": "DRUG"
        },
        {
          "name": "Preoperative Oxycodone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Louisville",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "21 Years to 89 Years"
      },
      "enrollment_count": 150,
      "start_date": "2024-02-19",
      "completion_date": "2024-10-18",
      "has_results": false,
      "last_update_posted_date": "2024-11-15",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 1,
      "location_summary": "Louisville, Kentucky",
      "locations": [
        {
          "city": "Louisville",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06691633"
    },
    {
      "nct_id": "NCT05670236",
      "title": "Effect of Knee Pain on Walking Biomechanics",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "Lidocaine Hydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 55,
      "start_date": "2023-01-25",
      "completion_date": "2024-07-19",
      "has_results": true,
      "last_update_posted_date": "2025-10-29",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05670236"
    },
    {
      "nct_id": "NCT00565812",
      "title": "A Long-Term, Placebo-Controlled X-Ray Study Investigating the Safety and Efficacy of SD-6010 in Subjects With Osteoarthritis of the Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "SD-6010",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "40 Years to 99 Years"
      },
      "enrollment_count": 1457,
      "start_date": "2007-11",
      "completion_date": "2011-11",
      "has_results": true,
      "last_update_posted_date": "2016-12-30",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 120,
      "location_summary": "Birmingham, Alabama • Peoria, Arizona • Phoenix, Arizona + 83 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00565812"
    },
    {
      "nct_id": "NCT06488144",
      "title": "Rehabilitation for Arthritis of The Knee: mainTaining Improvement for Veterans",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "Health coach",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Remote Incentive Program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "40 Years to 90 Years"
      },
      "enrollment_count": 254,
      "start_date": "2025-12-10",
      "completion_date": "2030-01-01",
      "has_results": false,
      "last_update_posted_date": "2026-01-08",
      "last_synced_at": "2026-07-23T20:39:02.146Z",
      "location_count": 5,
      "location_summary": "Birmingham, Alabama • Omaha, Nebraska • Portland, Oregon + 2 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06488144"
    }
  ]
}