Reverse Total Shoulder Arthroplasty With or Without Partial Coracoidectomy: Evaluation of Functional Internal Rotation

Inclusion Criteria: \- Adults undergoing reverse total shoulder arthroplasty (rTSA), including primary procedures or fracture repair. Indications may include arthropathy due to a rotator cuff tear, primary glenohumeral osteoarthritis with an irreparable rotator cuff tear, or post-traumatic arthritis. Exclusion Criteria: * Patients with a history of coracoid fractures or who have previously undergone surgery involving the coracoid process. * Patients undergoing latissimus dorsi transfers * Presence of an active infection, inflammatory arthritis, or a tumor affecting the shoulder region. * Patients with pre-existing neuromuscular disorders affecting shoulder function * Patients who are unwilling or unable to participate in the trial or complete follow-up assessments * Patients deprived of their liberty by judicial or administrative order, in pretrial detention, or under guardianship, conservatorship, or judicial protection. * Pregnant women, women in labor, or breastfeeding women * Patients receiving psychiatric care * Patients not enrolled in a social security program