1. Department of Paediatric Orthopaedics, Amiens Picardie University Hospital, University of Picardie Jules Verne, 80054 Amiens, France
2. MP3CV-EA7517, CURS—Amiens University Hospital, Jules Verne University of Picardie, 80000 Amiens, France
3. Paediatric Orthopaedic Surgery Department, Necker University Hospital, Sorbonne Paris Cité, 75015 Paris, France