{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Medacta+GMK+Sphere+prosthesis",
    "query": {
      "intervention": "Medacta GMK Sphere prosthesis"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 3,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T16:08:23.054Z",
  "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": "NCT02501733",
      "title": "Medacta GMK Sphere® Multicenter Post-Market Outcomes Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Medacta GMK Sphere® Medial Knee Prosthesis",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medacta USA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 260,
      "start_date": "2015-06",
      "completion_date": "2024-12-05",
      "has_results": false,
      "last_update_posted_date": "2025-09-25",
      "last_synced_at": "2026-09-24T16:08:23.054Z",
      "location_count": 5,
      "location_summary": "Chicago, Illinois • New Orleans, Louisiana • Oklahoma City, Oklahoma + 2 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Austin",
          "state": "Texas"
        },
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02501733"
    },
    {
      "nct_id": "NCT02577978",
      "title": "Stability of the Medial Pivot Total Knee Prosthesis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis of Knee"
      ],
      "interventions": [
        {
          "name": "Medacta GMK posterior stabilized prosthesis",
          "type": "DEVICE"
        },
        {
          "name": "Medacta GMK Sphere prosthesis",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Northwestern University",
      "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": 61,
      "start_date": "2014-04",
      "completion_date": "2017-06",
      "has_results": true,
      "last_update_posted_date": "2023-05-19",
      "last_synced_at": "2026-09-24T16:08:23.054Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02577978"
    },
    {
      "nct_id": "NCT03391323",
      "title": "Medacta GMK Sphere® vs. Medacta GMK PS Post-Market Outcomes Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis",
        "Osteoarthritis, Knee",
        "Joint Disease"
      ],
      "interventions": [
        {
          "name": "Medacta GMK Sphere® Medial-Pivot Knee Prosthesis",
          "type": "DEVICE"
        },
        {
          "name": "Medacta GMK PS Posterior Stabilized Knee Prosthesis",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "David F. Scott, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 218,
      "start_date": "2015-04",
      "completion_date": "2023-11-27",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-09-24T16:08:23.054Z",
      "location_count": 1,
      "location_summary": "Spokane, Washington",
      "locations": [
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03391323"
    }
  ]
}