Moderators Dan Cosma Romania Ines Balacó Portugal Martin Gottliebsen Denmark Marta Salom Taverner Spain Thomas Wirth Germany 15 April OP-016 Low rate of healing and high incidence of complications in benign pediatric bone tumors treated with synthetic calcium sulfate-calcium phosphate bone graft April, 15 | 11:30 - 11:35 Lindsey Andras OP-017 Vascularized fibular graft: a good reconstructive option after bone tumor resection in pediatric age April, 15 | 11:35 - 11:40 Giovanni Beltrami OP-018 Heterogeneity of osteosarcoma microenvironment using digital histology April, 15 | 11:40 - 11:45 Anne Brouchet OP-019 Clinical and functional results of endoprosthesis after bone sarcoma resection of the lower extremity in children and adolescents April, 15 | 11:45 - 11:50 Omer Sofulu OP-020 Stress shielding after reconstruction using cementless megaprosthesis in pediatric bone sarcoma patients, does it affect the outcome? April, 15 | 11:50 - 11:55 Ahmed Abdelaal OP-021 Open arthrotomy, arthroscopy or arthrocentesis for septic knee and ankle arthritis in children: a systematic review April, 15 | 12:05 - 12:10 Lilian Donders OP-022 Long term outcomes of paediatric hip septic arthritis April, 15 | 12:10 - 12:15 Nicole Williams