Lubis, A.M.T., Department of Orthopedic & Traumatology, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Reksoprodjo, A.Y., Department of Orthopedic & Traumatology, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Kuncoro, M.W., Department of Orthopedic & Traumatology, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Ifran, N.N., Department of Orthopedic & Traumatology, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia