43. LONG-TERM OUTCOMES FOLLOWING FREE VASCULARIZED FIBULA PHYSEAL TRANSFER FOR PROXIMAL HUMERUS ONCOLOGIC RECONSTRUCTION IN CHILDREN: AN INTERNATIONAL MULTI-INSTITUTIONAL STUDY oleh Said Azoury, MD, Ronnie Shammas, MD, Sammy Othman, MD, Amanda Sergesketter, MD, Brian Brigman, MD, Jie Nguyen, MD, Alexandre Arkader, MD, Kristy Weber, MD, Detlev Erdmann, MD PhD MHSc, Scott Levin, MD, Marco Innocenti, MD, Stephen Kovach, MD