title: RADIOGRAPHIC ABNORMALITIES OF THE TALUS IN PATIENTS WITH CLUBFOOT AFTER SURGICAL RELEASE USING THE MCKAY TECHNIQUE.
abstract: OBJECTIVE
  To analyze morphological abnormalities of the talus in patients with clubfoot after surgical treatment using the McKay technique.
  
  
  METHODS
  Lateral standing-position radiographs of the feet of 14 patients with unilateral clubfoot who underwent treatment by means of the doubleincision McKay technique were retrospectively analyzed. All the patients were operated by the same surgeon, with an average of 6.53 years between surgery and the radiograph. We compared the radiographic characteristics of the talus between the operated and the contralateral foot. We assessed the presence of deformity of the talar dome and head (sphericity evaluation); the talar length and height; the percentage and degree of navicular subluxation; abnormalities of the Gissane angle; and the trabecular bone pattern.
  
  
  RESULTS
  Abnormalities of the talar head occurred in 92.8% of the patients; of the talar dome in 92.8%; and of the trabecular pattern in 100%. The talar length ratio between the operated and the contralateral foot ranged from 0.61 to 0.88 (mean 0.79; SD = 0.09), while the height ratio ranged from 0.57 to 0.98 (mean 0.82; SD = 0.12). The Gissane angle was greater in all of the operated feet, and all of them also showed navicular subluxation, at a rate ranging from 6.43 to 59.75% (mean 26.34%; SD = 16.66%).
  
  
  CONCLUSIONS
  Talar abnormalities occurred in 100% of the feet treated using the McKay technique. It was shown that establishing radiographic parameters to describe and quantify these deformities was feasible, through simple and easy-to-perform techniques.
authors.affiliation: Adjunct Professor and Head of the Discipline of Pediatric Orthopedics, Department of Orthopedics and Traumatology, Federal University of São Paulo, SP, Brazil.
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Pinto
authors.affiliation: Resident Physician, Department of Orthopedics and Traumatology, Federal University of São Paulo, SP, Brazil.
authors.forename: Andréa Canizares
authors.initials: AC
authors.lastname: Hernandes
authors.affiliation: Resident Physician, Department of Orthopedics and Traumatology, Federal University of São Paulo, SP, Brazil.
authors.forename: Thais Paula
authors.initials: TP
authors.lastname: Buchaim
authors.affiliation: Attending Physician, Discipline of Pediatric Orthopedics, Department of Orthopedics and Traumatology, Federal University of São Paulo, SP, Brazil.
authors.forename: Francesco Camara
authors.initials: FC
authors.lastname: Blumetti
authors.affiliation: Physician studying for Specialist title in the Foot and Ankle Surgery Sector, Discipline of Orthopedics, Department of Orthopedics and Traumatology, Federal University of São Paulo, SP, Brazil.
authors.forename: Carla
authors.initials: C
authors.lastname: Chertman
authors.affiliation: Attending Physician, Discipline of Pediatric Orthopedics, Department of Orthopedics and Traumatology, Federal University of São Paulo, SP, Brazil.
authors.forename: Patrícia Corey
authors.initials: PC
authors.lastname: Yamane
authors.affiliation: Adjunct Professor and Deputy Head of the Department of Imaging Diagnostics, Federal University of São Paulo, SP, Brazil.
authors.forename: Artur
authors.initials: A
authors.lastname: da Rocha Corrêa Fernandes
keywords: Clubfoot/radiography; Morphology; Operative; Surgical Procedures; Talus