title: Translation and cross-cultural adaptation of FFI to Brazilian Portuguese version: FFI - Brazil.
abstract: OBJECTIVE
  Perform the translation and cultural adaptation of the questionnaire Foot Functional Index (FFI), which assesses the functionality of the foot, to the Brazilian Portuguese version.
  
  
  METHODS
  The Brazilian version development of FFI questionnaire was based on the guideline proposed by Guillemin. The applied process consisted of: (1) translation; (2) back-translation; (3) committee review; (4) pretesting. The Portuguese version was applied to 40 patients, both genders, aged over 18 years old, with plantar fasciitis and metatarsalgia to verify the level of the instrument comprehension. The final Brazilian version of the FFI was set after getting less than 15% of "not understanding" on each item.
  
  
  RESULTS
  Some terms and expressions were changed to obtain cultural equivalence for FFI. The terms that were incomprehensible were changed in accordance of patient suggestions.
  
  
  CONCLUSIONS
  After the translation and cultural adaptation of the questionnaire, the final Portuguese version of FFI was concluded.
authors.affiliation: Programa de Pós-Graduação Interdisciplinar em Ciências da Saúde, Universidade Federal de São Paulo, Santos, SP, Brasil. Electronic address: liuchiaoyi@yahoo.com.br.
authors.forename: Liu Chiao
authors.initials: LC
authors.lastname: Yi
authors.affiliation: Curso de Fisioterapia, Universidade Federal de São Paulo, Santos, SP, Brasil.
authors.forename: Isabela Maschk
authors.initials: IM
authors.lastname: Staboli
authors.affiliation: Programa de Pós-Graduação Interdisciplinar em Ciências da Saúde, Universidade Federal de São Paulo, Santos, SP, Brasil.
authors.forename: Danilo Harudy
authors.initials: DH
authors.lastname: Kamonseki
authors.affiliation: Departamento de Medicina, Loyola University of Chicago, Chicago, Estados Unidos.
authors.forename: Elly
authors.initials: E
authors.lastname: Budiman-Mak
authors.affiliation: Santa Casa de Santos, Santos, SP, Brasil.
authors.forename: Eduardo Kenzo
authors.initials: EK
authors.lastname: Arie
mesh_terms: D001938:Brazil; D003466:Cultural Characteristics; D059026:Diagnostic Self Evaluation; D036981:Fasciitis, Plantar / Q000503:physiopathology*; D005260:Female; D005528:Foot / Q000503:physiopathology*; D006801:Humans; D008297:Male; D037061:Metatarsalgia / Q000503:physiopathology*; D014177:Translations
keywords: Foot; Function; Função; Pé; Questionnaire; Questionário; Tradução; Translation