Anterograde removal of broken femoral nails without opening the nonunion site: a new technique - Cabrita, Henrique Antônio Berwanger de Amorim; Malavolta, Eduardo Ageli; Teixeira, Otávio Vilhena Reis; Montenegro, Nei Botter; Duarte, Eduardo Angeli; Mattar Júnior, Rames (Clinics, 2010)