Analisis Luaran Fungsional, Radiologis dan Kualitas Hidup Pasien Unstable Acetabular Fracture Dengan dan Tanpa Keterlibatan Quadrilateral Plate Pasca Operasi di RSUPN Cipto Mangunkusumo Tahun 2010-2020 = Postoperative Analysis of Functional, Radiological And Quality Of Life Outcomes Between Unstable Acetabular Fracture Patients With And Without Quadrilateral Plate Involvement At Cipto Mangunkusumo Hospital In 2010-2020