[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100631895":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":25,"centralContacts":29,"locations":25,"responsibleParty":35,"collaborators":25,"id":37,"slug":38,"hasResults":39,"nctId":40,"briefTitle":41,"officialTitle":42,"acronym":25,"eligibilityCriteria":43,"healthyVolunteers":39,"sex":44,"minAge":45,"maxAge":25,"enrollmentInfo":46,"targetDuration":25,"studyType":49,"phases":50,"briefSummary":52,"conditions":53,"keywords":25,"overallStatus":59,"whyStopped":25,"lastUpdateSubmitDate":60,"lastUpdatePostDateStruct":61,"startDateStruct":64,"completionDateStruct":66,"leadSponsor":68,"locationsCount":25},{"fullName":5,"class":6},"Yonsei University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Surgeon-Performed Adductor Canal Block","EXPERIMENTAL","Adductor canal block performed intraoperatively by the surgeon using an anatomical landmark-based technique. The injection is administered during surgery without ultrasound guidance using a standardized approach and the same type and volume of local anesthetic as the comparator.",[13],"Biological: Surgeon-Performed Adductor Canal Block",{"label":15,"type":16,"description":17,"interventionNames":18},"Ultrasound-Guided Adductor Canal Block","ACTIVE_COMPARATOR","Adductor canal block performed by an anesthesiologist under ultrasound guidance using real-time imaging. The same concentration and volume of local anesthetic are administered using a standardized ultrasound-guided technique.",[19],"Biological: Ultrasound-Guided Adductor Canal Block",[21,26],{"type":22,"name":9,"description":23,"armGroupLabels":24,"otherNames":25},"BIOLOGICAL","An adductor canal block performed intraoperatively by the surgeon using an anatomical landmark-based technique. The injection is administered at approximately 8 cm proximal to the distal femur, with the needle directed medially and posteriorly. A total of 20 mL of 0.3% ropivacaine mixed with epinephrine is injected using a standardized approach without ultrasound guidance.",[9],null,{"type":22,"name":15,"description":27,"armGroupLabels":28,"otherNames":25},"An adductor canal block performed by an anesthesiologist under ultrasound guidance. The saphenous nerve and femoral artery within the adductor canal are identified using real-time imaging, and 20 mL of 0.3% ropivacaine mixed with epinephrine is injected using an in-plane technique.",[15],[30],{"name":31,"role":32,"phone":33,"phoneExt":25,"email":34},"Kwan-Kyu Park, Professor","CONTACT","+82-2-2228-2183","kkpark@yuhs.ac",{"type":36,"investigatorFullName":25,"investigatorTitle":25,"investigatorAffiliation":25,"oldNameTitle":25,"oldOrganization":25},"SPONSOR","100631895","adductor-canal-block-methods-in-bilateral-total-knee-arthroplasty-100631895",false,"NCT07506629","Adductor Canal Block Methods in Bilateral Total Knee Arthroplasty","Comparison of Surgeon-Performed Intraoperative Adductor Canal Block and Ultrasound-Guided Anesthesiologist-Performed Block in Bilateral Total Knee Arthroplasty","Inclusion Criteria:\n\n* Adult patients aged 19 years or older\n* Patients scheduled for bilateral total knee arthroplasty\n* Patients who provide written informed consent\n\nExclusion Criteria:\n\n* Refusal to participate or inability to provide informed consent\n* Neurological or psychiatric conditions affecting cooperation (e.g., dementia, delirium)\n* Pre-existing neurological or anatomical abnormalities of the lower extremities\n* Chronic opioid use or opioid dependence\n* Coagulation disorders or contraindications to nerve block\n* Pregnancy\n* Cases in which ultrasound evaluation is technically not feasible","ALL","60 Years",{"count":47,"type":48},48,"ESTIMATED","INTERVENTIONAL",[51],"NA","This study aims to compare the analgesic efficacy of surgeon-performed intraoperative adductor canal block (ACB) and ultrasound-guided anesthesiologist-performed ACB in patients undergoing bilateral total knee arthroplasty (TKA). In a prospective, randomized paired design, each patient will receive surgeon-performed ACB on one knee and anesthesiologist-performed ACB on the contralateral knee.\n\nThe primary outcome is postoperative pain measured using the Numeric Rating Scale (NRS), and the study is designed to evaluate the non-inferiority of surgeon-performed ACB. Secondary outcomes include opioid consumption, time to first ambulation, length of hospital stay, postoperative complications, and patient-reported outcome measures (PROMs).\n\nAdditionally, postoperative ultrasound evaluation will be performed to assess the distribution pattern of local anesthetic within the adductor canal, including cross-sectional area and longitudinal spread. This study is expected to provide evidence regarding the clinical effectiveness and technical accuracy of surgeon-performed ACB in comparison with the conventional ultrasound-guided technique.",[54,55,56,57,58],"Knee Osteoarthritis","Total Knee Arthroplasty","Postoperative Pain","Peripheral Nerve Block","Adductor Canal Block","NOT_YET_RECRUITING","2026-03-26",{"date":62,"type":63},"2026-04-01","ACTUAL",{"date":65,"type":48},"2026-05-01",{"date":67,"type":48},"2029-03-01",{"name":5,"class":6}]