1. Department of Orthopaedics, Foot and Ankle Surgery, Hospital of the Municipal Public Servant of São Paulo (HSPM), São Paulo, SP, Brazil
2. Department of Orthopedic Surgery, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
3. Department of Orthopaedics, Foot and Ankle Surgery, University of São Paulo (HC FMRP-USP), Ribeirão Preto, SP, Brazil
4. Department of Orthopaedics, Foot and Ankle Surgery, University of Iowa, Iowa City, Iowa