A mid-term follow-up of Koutsogiannis’ osteotomy in adult-acquired flatfoot stage II and “early stage III”Camilla Arvinius, Elena Manrique, Antonio Urda, Zulema Cardoso, Jose Enrique Galeote and Fernando MarcoSICOT-J, 3 (2017) 24DOI: https://doi.org/10.1051/sicotj/2017011