[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"patellar-instability\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:patellar-instability":26},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,2,0,[8,51],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":13,"acronym":4,"eligibilityCriteria":14,"healthyVolunteers":11,"sex":15,"minAge":16,"maxAge":17,"enrollmentInfo":18,"targetDuration":4,"studyType":21,"phases":4,"briefSummary":22,"conditions":23,"keywords":30,"overallStatus":38,"whyStopped":4,"lastUpdateSubmitDate":39,"lastUpdatePostDateStruct":40,"startDateStruct":43,"completionDateStruct":45,"leadSponsor":47,"locationsCount":50},"100583981","jupiter-40---risk-factors-for-failure-of-isolated-medial-patellofemoral-ligament-reconstruction-100583981",false,"NCT06883396","JUPITER 4.0 - Risk Factors for Failure of Isolated Medial Patellofemoral Ligament Reconstruction","Inclusion Criteria:\n\n* 10-35 years old\n* Recurrent patellar instability with at least one episode defined as either (1) a dislocated patella requiring reduction in the emergency department or (2) a convincing history for dislocation, associated with full giving way, and the following physical findings: (a) hemarthrosis or effusion, (b) tenderness along the medial retinaculum, and (c) apprehension when laterally directed force was applied to the patella or (3) MRI-documented dislocation with associated bone bruises\n\nExclusion Criteria:\n\n* Previous ipsilateral knee surgery\n* Obligatory\u002Ffixed\u002Fhabitual patella dislocation or subluxation\n* Unloadable inferior or lateral chondral damage on the patella that would require a tibial tubercle transfer for unloading purposes\n* Pathologic tibiofemoral instability","ALL","10 Years","35 Years",{"count":19,"type":20},850,"ESTIMATED","OBSERVATIONAL","The goal of this observational study is to learn about the outcomes of medial patellofemoral ligament (MPFL) reconstruction for the treatment of recurrent patellar instability. The main questions it aims to answer are:\n\n* What are the risk factors for recurrent patellar instability after MPFL reconstruction?\n* What functional outcomes do patients report after MPFL reconstruction?\n\nParticipants undergoing MPFL reconstruction will answer survey questions about their knee and activity level 1 year and 2 years after surgery.",[24,25,26,27,28,29],"Patellar Dislocation, Recurrent","Patellar Dislocation","Patellar Instability","Patellofemoral Dislocation","Patellofemoral Joint Dislocation","Patellofemoral Disorder",[31,32,26,33,34,35,36,37],"Patella","Patella Dislocation","Recurrent Patellar Instability","MPFL","Medial Patellofemoral Ligament","Medial Patellofemoral Ligament Reconstruction","Patellofemoral Instability","RECRUITING","2026-02-11",{"date":41,"type":42},"2026-02-13","ACTUAL",{"date":44,"type":42},"2023-01-01",{"date":46,"type":20},"2027-12",{"name":48,"class":49},"Hospital for Special Surgery, New York","OTHER",16,{"id":52,"slug":53,"hasResults":11,"nctId":54,"briefTitle":55,"officialTitle":56,"acronym":57,"eligibilityCriteria":58,"healthyVolunteers":11,"sex":15,"minAge":59,"maxAge":4,"enrollmentInfo":60,"targetDuration":4,"studyType":62,"phases":63,"briefSummary":65,"conditions":66,"keywords":67,"overallStatus":38,"whyStopped":4,"lastUpdateSubmitDate":76,"lastUpdatePostDateStruct":77,"startDateStruct":79,"completionDateStruct":81,"leadSponsor":83,"locationsCount":5},"100427678","comparison-of-dynamic-and-static-medial-patellofemoral-ligament-operation-technique-for-recurrent-patellar-dislocation-100427678","NCT04849130","Comparison of Dynamic and Static Medial Patellofemoral Ligament Operation Technique for Recurrent Patellar Dislocation","DynMPFL - Comparison of Dynamic and Static Medial Patellofemoral Ligament Operation Technique for Recurrent Patellar Dislocation","DynMPFL","Inclusion Criteria:\n\n* Patients treated with isolated dynamic (operation procedure according to Becher et al.using the gracilis tendon) or static MPFL plastic (operation procedure according to Schöttle et al. using the gracilis tendon). MPFL reconstruction will be performed in patients with preceding patella dislocation with: 1) a Patella-Instability-Severity (PIS) score ≤ 3 with concomitant flake fracture or 2) a PIS score ≥ 4 with clinical asymptomatic trochlea dysplasia (patella stability between 30°-60° knee flexion) without other clinically relevant static risk factors.\n* Closed growth plates\n\nExclusion Criteria:\n\n* Combined procedures with trochleoplasty (high grade trochlea dysplasia, type Dejour C,D with clinical instability between 30° and 60° of knee flexion)\n* combined procedures with cartilage transplantation\n* High grade patellofemoral arthritis (Kellgren Lawrence score ≥3)\n* combined procedures with femoral or tibial osteotomy\n* Clinically eminent valgus axis (\\>15° valgus)\n* Femoral internal rotation \\>20°, tibial external rotation \\>40°\n* Instability of the cruciate or collateral ligaments\n* Known significant musculoskeletal disease\n* Cognitive impairment","14 Years",{"count":61,"type":20},60,"INTERVENTIONAL",[64],"NA","This study is to evaluate whether the dynamic Medial Patellofemoral Ligament (MPFL) reconstruction as described by Becher is a successful operation technique to prevent patella instability and restore quality of life. It is to assess and compare clinical and functional outcomes of dynamic and static medial patellofemoral ligament reconstruction",[26],[68,69,70,71,72,73,74,75],"chronic patellar instability","static medial patellofemoral ligament (MPFL) reconstruction","static reconstruction technique according to Schöttle","dynamic medial patellofemoral ligament (MPFL) reconstruction","patellofemoral ligament reconstruction","patella dislocation","Patella-Instability-Severity (PIS) score","dynamic reconstruction technique according to Becher","2025-04-17",{"date":78,"type":42},"2025-04-22",{"date":80,"type":42},"2021-05-10",{"date":82,"type":20},"2027-03",{"name":84,"class":49},"University Hospital, Basel, Switzerland"]