[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100629336":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":20,"centralContacts":21,"locations":27,"responsibleParty":40,"collaborators":20,"id":44,"slug":45,"hasResults":46,"nctId":47,"briefTitle":48,"officialTitle":49,"acronym":20,"eligibilityCriteria":50,"healthyVolunteers":46,"sex":51,"minAge":52,"maxAge":53,"enrollmentInfo":54,"targetDuration":20,"studyType":57,"phases":58,"briefSummary":60,"conditions":61,"keywords":64,"overallStatus":70,"whyStopped":20,"lastUpdateSubmitDate":71,"lastUpdatePostDateStruct":72,"startDateStruct":75,"completionDateStruct":77,"leadSponsor":79,"locationsCount":80},{"fullName":5,"class":6},"Istanbul University - Cerrahpasa","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Participants With Suspected Piriformis Syndrome","EXPERIMENTAL","Participants with suspected piriformis syndrome will undergo standardized clinical assessment and the diagnostic intervention defined as Ultrasound-Guided Piriformis Injection, consisting of ultrasound-guided injection of 5 mL of 2% lidocaine into the piriformis muscle.",[13],"Diagnostic Test: Ultrasound-Guided Piriformis Injection",[15],{"type":16,"name":17,"description":18,"armGroupLabels":19,"otherNames":20},"DIAGNOSTIC_TEST","Ultrasound-Guided Piriformis Injection","Ultrasound-guided injection of 5 mL of 2% lidocaine into the piriformis muscle for diagnostic confirmation. A patient-reported pain reduction of 50% or more at 1 hour after injection will be considered confirmation of piriformis syndrome.",[9],null,[22],{"name":23,"role":24,"phone":25,"phoneExt":20,"email":26},"Busra Nur Aslantas, MD","CONTACT","+905075985562","busra.kaya1@iuc.edu.tr",[28],{"facility":29,"status":20,"city":30,"state":20,"zip":20,"country":31,"countryCode":20,"cosmosGeoPoint":32,"geoPoint":37,"contacts":38},"Istanbul University-Cerrahpasa, Cerrahpasa Medical Faculty","Istanbul","Turkey (Türkiye)",{"type":33,"coordinates":34},"Point",[35,36],28.94966,41.01384,{"lat":36,"lon":35},[39],{"name":23,"role":24,"phone":25,"phoneExt":20,"email":26},{"type":41,"investigatorFullName":42,"investigatorTitle":43,"investigatorAffiliation":5,"oldNameTitle":20,"oldOrganization":20},"PRINCIPAL_INVESTIGATOR","Busra Nur Aslantas","Resident Physician, Physical Medicine and Rehabilitation Department","100629336","diagnostic-accuracy-of-clinical-tests-and-diagnostic-criteria-for-piriformis-syndrome-100629336",false,"NCT07473349","Diagnostic Accuracy of Clinical Tests and Diagnostic Criteria for Piriformis Syndrome","Evaluation of the Diagnostic Accuracy of Diagnostic Criteria and Clinical Tests for Piriformis Syndrome","Inclusion Criteria:\n\n* Adults aged 18 to 75 years\n* Presentation with gluteal pain\n* Pain on palpation in the piriformis region\n\nExclusion Criteria:\n\n* History of injection to the lumbar, hip, or gluteal region within the last 3 months,including steroid, hyaluronic acid, or similar injections\n* History of hip surgery\n* Presence of active inflammatory rheumatic disease, including rheumatoid arthritis, ankylosing spondylitis, polymyalgia rheumatica, vasculitis, or similar conditions\n* Active skin or subcutaneous soft tissue infection in the gluteal region\n* Use of anticoagulant therapy that may contraindicate injection\n* Presence of a bleeding disorder\n* Uncontrolled diabetes mellitus and\u002For hypertension\n* History of neurological disease\n* Pregnancy or lactation\n* Presence of a psychiatric disorder\n* Known allergy to the injection agents\n* History of malignancy","ALL","18 Years","75 Years",{"count":55,"type":56},75,"ESTIMATED","INTERVENTIONAL",[59],"NA","Piriformis syndrome is a clinical condition characterized by buttock pain and\u002For sciatic-like symptoms, and its diagnosis remains challenging because there is no universally accepted diagnostic standard. This study aims to evaluate the diagnostic accuracy of commonly used diagnostic criteria and clinical tests for piriformis syndrome. Participants with suspected piriformis syndrome will undergo standardized physical examination and assessment of predefined diagnostic criteria. Ultrasound-guided injection of 5 mL of 2% lidocaine into the piriformis muscle will be used as the reference diagnostic procedure. A reduction of 50% or more in pain after injection will be considered confirmation of piriformis syndrome. The diagnostic performance of clinical tests and diagnostic criteria will be analyzed accordingly.",[62,63],"Piriformis Syndrome","Gluteal Pain",[65,62,63,66,67,68,69],"Ultrasound-Guided Injection","Sciatica","Diagnostic Accuracy","Clinical Tests","Diagnostic Criteria","NOT_YET_RECRUITING","2026-03-14",{"date":73,"type":74},"2026-03-17","ACTUAL",{"date":76,"type":56},"2026-03-15",{"date":78,"type":56},"2026-09-15",{"name":5,"class":6},1]