{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=RSA+Beads",
    "query": {
      "intervention": "RSA Beads"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 8,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-07T21:50:16.407Z",
  "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": "NCT01668160",
      "title": "Stability of Revision Total Hip Arthroplasty Implants Using Radiostereometric Analysis",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis of Hip",
        "Failure of Primary THA"
      ],
      "interventions": [
        {
          "name": "Bead placement during revision hip replacement surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "25 Years to 75 Years"
      },
      "enrollment_count": 0,
      "start_date": "2012-02",
      "completion_date": "2020-01",
      "has_results": false,
      "last_update_posted_date": "2013-11-05",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01668160"
    },
    {
      "nct_id": "NCT01593176",
      "title": "Radiostereometric Analysis of Fracture Healing in Distal Femur Fractures",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Distal Femur Fractures"
      ],
      "interventions": [
        {
          "name": "Placement of RSA beads",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2012-05",
      "completion_date": "2015-06",
      "has_results": false,
      "last_update_posted_date": "2015-05-06",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01593176"
    },
    {
      "nct_id": "NCT03261986",
      "title": "A Prospective RSA and Clinical Evaluation of the Trident II Acetabular Cup",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Total Hip Arthroplasty",
        "Acetabular Cup"
      ],
      "interventions": [
        {
          "name": "Radiostereometric Analysis",
          "type": "RADIATION"
        },
        {
          "name": "total hip arthroplasty with RSA bead implantation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Midwest Orthopaedics at Rush",
      "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": 50,
      "start_date": "2017-06-09",
      "completion_date": "2022-02-09",
      "has_results": false,
      "last_update_posted_date": "2020-03-17",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 1,
      "location_summary": "Naperville, Illinois",
      "locations": [
        {
          "city": "Naperville",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03261986"
    },
    {
      "nct_id": "NCT00152152",
      "title": "Use of Radiostereometric Analysis Beads (RSA) to Measure Motion in the Spine, Following Lumbar Spinal Surgery",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Spinal Fusion",
        "Lumbar Discectomy"
      ],
      "interventions": [
        {
          "name": "Radiostereometric Analysis beads inserted during surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "State University of New York - Upstate Medical University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 75,
      "start_date": "2002-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2008-05-23",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 1,
      "location_summary": "Syracuse, New York",
      "locations": [
        {
          "city": "Syracuse",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00152152"
    },
    {
      "nct_id": "NCT00634465",
      "title": "A Biomechanical Assessment of the AST Stabilimax BAR Using Radiostereometric Analysis (RSA)",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Assess Motion in Flexion/Extension and Lateral Bending of the Lumbar Vertebrae in Vivo Following Motion Sparing Surgery Using Radiostereometric Analysis (RSA.)"
      ],
      "interventions": [
        {
          "name": "RSA Beads",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "State University of New York - Upstate Medical University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 0,
      "start_date": "2006-10",
      "completion_date": "2008-10",
      "has_results": false,
      "last_update_posted_date": "2015-05-25",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 1,
      "location_summary": "Syracuse, New York",
      "locations": [
        {
          "city": "Syracuse",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00634465"
    },
    {
      "nct_id": "NCT01754155",
      "title": "A Prospective Radiostereometric Analysis and Clinical Evaluation of the Zimmer® Continuum® Acetabular Cup With Vitamin E Stabilized Polyethylene",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Radiostereometric Analysis",
        "Vitamin E Liner",
        "Zimmer® Continuum® Acetabular Cup"
      ],
      "interventions": [
        {
          "name": "RSA images",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Central DuPage 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": 55,
      "start_date": "2013-01",
      "completion_date": "2018-12",
      "has_results": false,
      "last_update_posted_date": "2017-08-24",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 1,
      "location_summary": "Winfield, Illinois",
      "locations": [
        {
          "city": "Winfield",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01754155"
    },
    {
      "nct_id": "NCT00152165",
      "title": "Use of Radiostereometric Analysis (RSA) Following Spinal Fusion Versus the DYNESYS Stabilization System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Spinal Fusion",
        "Orthopedic Procedures"
      ],
      "interventions": [
        {
          "name": "Radiostereometric Analysis beads inserted during surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "State University of New York - Upstate Medical University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 12,
      "start_date": "2003-11",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2008-12-02",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 1,
      "location_summary": "Syracuse, New York",
      "locations": [
        {
          "city": "Syracuse",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00152165"
    },
    {
      "nct_id": "NCT02260856",
      "title": "A Randomized Controlled Trial of Leg Length Discrepancy Techniques",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Leg Length Discrepancy"
      ],
      "interventions": [
        {
          "name": "Tantalum Beads & Injector",
          "type": "DEVICE"
        },
        {
          "name": "Percutaneous Drill Epiphysiodesis",
          "type": "PROCEDURE"
        },
        {
          "name": "Percutaneous Screw Epiphysiodesis",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "7 Years to 18 Years"
      },
      "enrollment_count": 170,
      "start_date": "2015-06",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2025-01-24",
      "last_synced_at": "2026-09-07T21:50:16.407Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • New York, New York",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02260856"
    }
  ]
}