{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Knee+Deformity",
    "query": {
      "condition": "Knee Deformity"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 34,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Knee+Deformity&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T06:43:34.503Z",
  "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": "NCT03969654",
      "title": "ROSA Robot Used in Total Knee Replacement Post Market Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Knee Pain",
        "Chronic Osteoarthritis",
        "Avascular Necrosis of the Femoral Condyle",
        "Moderate Varus, Valgus or Flexion Deformities",
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "PERSONA Total Knee",
          "type": "DEVICE"
        },
        {
          "name": "Vanguard Total Knee",
          "type": "DEVICE"
        },
        {
          "name": "NexGen Total Knee",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 181,
      "start_date": "2020-05-01",
      "completion_date": "2023-09-22",
      "has_results": true,
      "last_update_posted_date": "2024-05-03",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 5,
      "location_summary": "Vail, Colorado • Westminster, Colorado • Springfield, Illinois + 2 more",
      "locations": [
        {
          "city": "Vail",
          "state": "Colorado"
        },
        {
          "city": "Westminster",
          "state": "Colorado"
        },
        {
          "city": "Springfield",
          "state": "Illinois"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "North Chesterfield",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03969654"
    },
    {
      "nct_id": "NCT01708434",
      "title": "Feasibility Study: Evaluation of the Ulthera® System for Treatment of the Knees",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Skin Laxity"
      ],
      "interventions": [
        {
          "name": "Ulthera® System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ulthera, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 65 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2011-06",
      "completion_date": "2012-08",
      "has_results": false,
      "last_update_posted_date": "2017-11-24",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01708434"
    },
    {
      "nct_id": "NCT00698854",
      "title": "A Clinical Investigation of the Vanguard™ Complete Knee System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteoarthritis",
        "Traumatic Arthritis",
        "Rheumatoid Arthritis",
        "Lower Limb Deformity",
        "Complications, Arthroplasty"
      ],
      "interventions": [
        {
          "name": "Vanguard™ Complete Knee System",
          "type": "DEVICE"
        },
        {
          "name": "Vanguard™ Patient-Specific Femur",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 552,
      "start_date": "2004-03",
      "completion_date": "2024-03",
      "has_results": false,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 8,
      "location_summary": "Cedar Rapids, Iowa • Rockville, Maryland • Cape Girardeau, Missouri + 5 more",
      "locations": [
        {
          "city": "Cedar Rapids",
          "state": "Iowa"
        },
        {
          "city": "Rockville",
          "state": "Maryland"
        },
        {
          "city": "Cape Girardeau",
          "state": "Missouri"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Grapevine",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00698854"
    },
    {
      "nct_id": "NCT00733902",
      "title": "Tanezumab in Osteoarthritis of the Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Arthritis",
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "tanezumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 697,
      "start_date": "2008-09-15",
      "completion_date": "2010-01-14",
      "has_results": true,
      "last_update_posted_date": "2021-03-22",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 82,
      "location_summary": "Phoenix, Arizona • Danbury, Connecticut • Stamford, Connecticut + 65 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Danbury",
          "state": "Connecticut"
        },
        {
          "city": "Stamford",
          "state": "Connecticut"
        },
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Clearwater",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00733902"
    },
    {
      "nct_id": "NCT04145401",
      "title": "Post Market Clinical Follow-Up Study- EVOLUTION® Revision CCK",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Knee Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Revision Knee implants",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "MicroPort Orthopedics Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 45,
      "start_date": "2020-09-30",
      "completion_date": "2033-11-01",
      "has_results": false,
      "last_update_posted_date": "2024-03-20",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 1,
      "location_summary": "Englewood, Colorado",
      "locations": [
        {
          "city": "Englewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04145401"
    },
    {
      "nct_id": "NCT01542580",
      "title": "A Prospective, Clinical Investigation of the Vanguard 360 Revision Knee",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Osteoarthritis",
        "Rheumatoid Arthritis",
        "Traumatic Arthritis",
        "Post Traumatic Deformity",
        "Complications; Arthroplasty",
        "Deformity of Limb"
      ],
      "interventions": [
        {
          "name": "Vanguard SSK 360 with PS Bearing",
          "type": "DEVICE"
        },
        {
          "name": "Vanguard SSK 360 with PSC bearing",
          "type": "DEVICE"
        },
        {
          "name": "Vanguard DA 360",
          "type": "DEVICE"
        },
        {
          "name": "Vanguard 360 TiNbN Femur with PS bearing",
          "type": "DEVICE"
        },
        {
          "name": "Vanguard 360 TiNbN Femur with PSC bearing",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 255,
      "start_date": "2012-03",
      "completion_date": "2031-12",
      "has_results": false,
      "last_update_posted_date": "2025-11-25",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 4,
      "location_summary": "Morton Grove, Illinois • Henderson, Nevada • Salt Lake City, Utah + 1 more",
      "locations": [
        {
          "city": "Morton Grove",
          "state": "Illinois"
        },
        {
          "city": "Henderson",
          "state": "Nevada"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        },
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01542580"
    },
    {
      "nct_id": "NCT07286513",
      "title": "Persona SoluTion PPS Femur PMCF",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Rhematoid Arthritis",
        "Osteo Arthritis of the Knee",
        "Traumatic Arthritis of Knee (Diagnosis)",
        "Polyarthritis",
        "Collagen Disorders",
        "Avascular Necrosis of Femoral Condyle",
        "Valgus Deformity",
        "Varus Deformity",
        "Flexion Deformity of Knee"
      ],
      "interventions": [
        {
          "name": "Total knee arthroplasty",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2026-02-26",
      "completion_date": "2037-12",
      "has_results": false,
      "last_update_posted_date": "2026-04-21",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07286513"
    },
    {
      "nct_id": "NCT02175576",
      "title": "Randomized Controlled Clinical Outcomes of the Vanguard XP Bicruciate Knee System",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis",
        "Rheumatoid Arthritis",
        "Traumatic Arthritis",
        "Lower Limb Deformity",
        "Post-traumatic Deformity",
        "Complications, Arthroplasty"
      ],
      "interventions": [
        {
          "name": "Vanguard XP Bicruciate Knee System",
          "type": "DEVICE"
        },
        {
          "name": "Vanguard CR Knee System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2014-10",
      "completion_date": "2020-12",
      "has_results": true,
      "last_update_posted_date": "2023-02-21",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 2,
      "location_summary": "Chicago, Illinois • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02175576"
    },
    {
      "nct_id": "NCT05787821",
      "title": "Persona OsseoTi Keel Compatibility Study (Total Knee Arthroplasty)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Knee Pain Chronic",
        "Osteoarthritis, Knee",
        "Rheumatoid Arthritis",
        "Traumatic Arthritis",
        "Polyarthritis",
        "Varus Deformity",
        "Valgus Deformity",
        "Flexion Deformity of Knee",
        "Avascular Necrosis"
      ],
      "interventions": [
        {
          "name": "Total Knee Arthroplasty",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zimmer Biomet",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 760,
      "start_date": "2023-06-28",
      "completion_date": "2035-06",
      "has_results": false,
      "last_update_posted_date": "2026-01-20",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 16,
      "location_summary": "Parker, Colorado • Tampa, Florida • Atlanta, Georgia + 13 more",
      "locations": [
        {
          "city": "Parker",
          "state": "Colorado"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05787821"
    },
    {
      "nct_id": "NCT07103070",
      "title": "A Test of Efficacy and Foot Position Alteration in Patients Wearing Good Feet Arch Supports for the Treatment of Pain",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Plantar Fasciitis of Both Feet",
        "Metatarsalgia",
        "Morton Neuroma",
        "Hallux Valgus Deformity",
        "Low Back Pain",
        "Knee Pain",
        "Ankle Pain"
      ],
      "interventions": [
        {
          "name": "Arch supports",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 43,
      "start_date": "2022-06-13",
      "completion_date": "2024-03-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-08",
      "last_synced_at": "2026-05-22T06:43:34.503Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07103070"
    }
  ]
}