{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Total+Knee+Arthroplasty+Postoperative+Pain",
    "query": {
      "condition": "Total Knee Arthroplasty Postoperative Pain"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 138,
    "total_pages": 14,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Total+Knee+Arthroplasty+Postoperative+Pain&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-27T03:43:28.493Z",
  "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": "NCT00923598",
      "title": "Optimizing Local Anesthetic Concentration for Continuous Femoral Nerve Blocks",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Total Knee Arthroplasty",
        "Knee Pain"
      ],
      "interventions": [
        {
          "name": "0.1% and 0.4% perineural ropivicaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2009-06",
      "completion_date": "2011-04",
      "has_results": true,
      "last_update_posted_date": "2019-12-02",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00923598"
    },
    {
      "nct_id": "NCT01415856",
      "title": "Use of Pulsed Electromagnetic Fields for Postoperative Knee Pain",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Active Device (Torino II)",
          "type": "DEVICE"
        },
        {
          "name": "Sham Device (Torino II)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Center for Joint Surgery and Sports Medicine, Maryland",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2010-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2011-08-12",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 1,
      "location_summary": "Hagerstown, Maryland",
      "locations": [
        {
          "city": "Hagerstown",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01415856"
    },
    {
      "nct_id": "NCT03015532",
      "title": "Total Knee Arthroplasty Infiltration Study for Postoperative Analgesia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Postoperative Pain"
      ],
      "interventions": [
        {
          "name": "HTX-011",
          "type": "DRUG"
        },
        {
          "name": "Saline Placebo",
          "type": "DRUG"
        },
        {
          "name": "Bupivicaine HCl",
          "type": "DRUG"
        },
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Heron Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 285,
      "start_date": "2017-01-13",
      "completion_date": "2018-05-16",
      "has_results": true,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 24,
      "location_summary": "Mobile, Alabama • Sheffield, Alabama • Phoenix, Arizona + 13 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Sheffield",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03015532"
    },
    {
      "nct_id": "NCT01055015",
      "title": "Double Blind Efficacy and Safety Study of Flexible-Dose vs Low-Dose Q8003 After Undergoing Primary Unilateral Total Knee Arthroplasty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Postoperative Pain"
      ],
      "interventions": [
        {
          "name": "Flexible dose Q8003 (morphine sulfate and oxycodone hydrochloride)",
          "type": "DRUG"
        },
        {
          "name": "Low dose Q8003 (morphine sulfate and oxycodone hydrochloride)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "QRxPharma Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 141,
      "start_date": "2010-02",
      "completion_date": "2010-12",
      "has_results": false,
      "last_update_posted_date": "2012-05-17",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • Sheffield, Alabama • Phoenix, Arizona + 8 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Sheffield",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01055015"
    },
    {
      "nct_id": "NCT03316118",
      "title": "US Guided GNB vs Saline Injection for TKA",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Postoperative Pain",
        "Total Knee Arthroplasty",
        "Nerve Block"
      ],
      "interventions": [
        {
          "name": "bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 2,
      "start_date": "2017-10-05",
      "completion_date": "2021-06-21",
      "has_results": true,
      "last_update_posted_date": "2022-09-28",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03316118"
    },
    {
      "nct_id": "NCT01379118",
      "title": "Comparison of Clinical Outcomes and Performance of Total Knee Replacement Patients Before and After Surgery",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Degenerative Joint Disease",
        "Osteoarthritis",
        "Knee Injury, Trauma",
        "Connective Tissue Disorder",
        "Pain",
        "Loss of Function"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Loma Linda University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 50,
      "start_date": "2012-07",
      "completion_date": "2016-04",
      "has_results": false,
      "last_update_posted_date": "2016-09-15",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 1,
      "location_summary": "San Bernardino, California",
      "locations": [
        {
          "city": "San Bernardino",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01379118"
    },
    {
      "nct_id": "NCT02624856",
      "title": "Liposomal Bupivacaine Versus Standard Bupivacaine Plus Dexamethasone in Quadriceps Sparing Femoral Nerve Block and Wound Infiltration for Total Knee Arthroplasty",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osteoarthritis",
        "Pain, Postoperative"
      ],
      "interventions": [
        {
          "name": "Liposomal bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "Bupivacaine plus dexamethasone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Albany Medical College",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "40 Years to 70 Years"
      },
      "enrollment_count": 0,
      "start_date": "2015-11",
      "completion_date": "2020-01-01",
      "has_results": false,
      "last_update_posted_date": "2020-01-23",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 1,
      "location_summary": "Albany, New York",
      "locations": [
        {
          "city": "Albany",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02624856"
    },
    {
      "nct_id": "NCT03864588",
      "title": "Comparing Ropivacaine Adductor Canal Blockade by Surgeon Versus Anesthesiologist",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pain, Postoperative",
        "Satisfaction"
      ],
      "interventions": [
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rothman Institute Orthopaedics",
      "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": 164,
      "start_date": "2018-10-01",
      "completion_date": "2019-09",
      "has_results": false,
      "last_update_posted_date": "2019-03-06",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03864588"
    },
    {
      "nct_id": "NCT05023278",
      "title": "The Use of Venlafaxine in Reducing Pain in Primary Total Knee Replacement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acute Pain",
        "Chronic Pain",
        "Knee Pain Chronic",
        "Neuropathic Pain"
      ],
      "interventions": [
        {
          "name": "Venlafaxine 37.5 MG",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 100,
      "start_date": "2021-05-10",
      "completion_date": "2025-03-31",
      "has_results": false,
      "last_update_posted_date": "2025-05-20",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05023278"
    },
    {
      "nct_id": "NCT02830087",
      "title": "Tourniquet Pressure in Primary Total Knee Arthroplasty",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tourniquets",
        "Knee Arthroplasty, Total",
        "Knee Replacement, Total"
      ],
      "interventions": [
        {
          "name": "Tourniquet Cuff Pressure",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 21,
      "start_date": "2016-06",
      "completion_date": "2016-09-20",
      "has_results": true,
      "last_update_posted_date": "2018-12-19",
      "last_synced_at": "2026-06-27T03:43:28.493Z",
      "location_count": 2,
      "location_summary": "Bermuda Run, North Carolina • Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Bermuda Run",
          "state": "North Carolina"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02830087"
    }
  ]
}