[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"leadSponsorName\":\"Vienna Hospital Association\",\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:":49},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":15,"eligibilityCriteria":16,"healthyVolunteers":11,"sex":17,"minAge":18,"maxAge":19,"enrollmentInfo":20,"targetDuration":4,"studyType":23,"phases":24,"briefSummary":26,"conditions":27,"keywords":31,"overallStatus":37,"whyStopped":4,"lastUpdateSubmitDate":38,"lastUpdatePostDateStruct":39,"startDateStruct":42,"completionDateStruct":44,"leadSponsor":46,"locationsCount":5},"100628694","emg-and-delta-function-in-standard-rtsa-vs-lateralization-100628694",false,"NCT07464977","EMG and Delta Function in Standard RTSA vs Lateralization","Postoperative Deltoid EMG Activity and Function in Patients After Reverse Total Shoulder Arthroplasty: A Comparison of Standard Implantation Technique and Lateralization","EMGRTSA","Inclusion Criteria:\n\n* male\u002Ffemale, 60-85y\n* diagnosis of Cuff tear arthropathy (CTA)\n* irreparable rotator cuff tear\n* severe osteoarthritis (OA)\n* primary RSA\n* verified rotator cuff tear in preoperative MRI\n* absence of severe cognitive impairment\n\nExclusion Criteria:\n\n* previous muscle transfer\n* revision surgery\n* highly dysplastic glenoid\n* axillary nerve palsy\n* upper limb radiculopathy\n* cervical myelopathy\n* degenerative muscular disease,\n* previous proximal humeral fracture\n* revision arthroplasty\n* rheumatoid arthritis","ALL","60 Years","85 Years",{"count":21,"type":22},130,"ESTIMATED","INTERVENTIONAL",[25],"NA","Reverse total shoulder arthroplasty (RTSA) is a well-established method to treat patients with irreparable rotator cuff tears and glenohumeral osteoarthritis. The biomechanical principle implies a medialization and distalization of the center of rotation (COR). Deficiencies in internal and external rotation constitute frequently encountered functional problems. Some studies showed reduced activation of the posterior deltoid in EMG measurements, which may explain the inability to compensate these movements. Lateralized prosthetic designs demonstrated increased external rotation through an alteration of the deltoid's lever arm.\n\nThe aim of the study is to investigate the impact of lateralization on functional outcome and deltoid EMG activity in comparison to a standard implantation technique.",[28,29,30],"Cuff Tear Arthropathy","Omarthrosis","Rotator Cuff Tear Arthropathy",[32,33,34,35,36],"reverse total shoulder arthroplasty","cuff tear arthropathy","lateralization","deltoid function","EMG","NOT_YET_RECRUITING","2026-05-02",{"date":40,"type":41},"2026-05-07","ACTUAL",{"date":43,"type":22},"2026-06",{"date":45,"type":22},"2027-12",{"name":47,"class":48},"Vienna Hospital Association","OTHER_GOV",""]