title: The correlation between selected measurements from footprint and radiograph of flatfoot.
abstract: OBJECTIVE
  To assess the subarch angle obtained from electronic footprints using a capacitive mat transducer system in children with flatfeet, to evaluate other foot arch indexes, and to compare the results with radiographic measurements.
  
  
  METHODS
  A cross-sectional study.
  
  
  METHODS
  Rehabilitation clinic in a municipal hospital.
  
  
  METHODS
  Thirty-two children (age range, 7-13y) diagnosed with flatfeet.
  
  
  METHODS
  Radiographic measurements and foot shape measurements obtained from feet.
  
  
  METHODS
  Talo-first metatarsal angle, talocalcaneal angle, talo-horizontal angle, and calcaneal angle were obtained from radiographs. Subarch angle, arch indexes, and long plantar angle were all captured and calculated via a capacitive transducer plate.
  
  
  RESULTS
  Correlations between the subarch angle and the talo-first metatarsal angle, talo-horizontal angle, and arch height were significant, as was the correlation between midfoot arch index and talo-horizontal angle. The forefoot arch index had no significant relationship with radiographic parameters. The talo-horizontal angle and arch height had significant relationships with the long plantar angle.
  
  
  CONCLUSIONS
  Measurement of the subarch angle had significant correlation with the radiographic parameters in children with flatfeet and it was accurately and easily obtained from a capacitive forceplate. Measurement of the subarch angle can be a useful tool in the assessment and diagnosis of flatfoot.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Chung-Ho Memorial Hospital, Kaohsiung Medical University, Taiwan.
authors.forename: Chia-Hsin
authors.initials: CH
authors.lastname: Chen
authors.forename: Mao-Hsiung
authors.initials: MH
authors.lastname: Huang
authors.forename: Tien-Wen
authors.initials: TW
authors.lastname: Chen
authors.forename: Ming-Cheng
authors.initials: MC
authors.lastname: Weng
authors.forename: Chia-Ling
authors.initials: CL
authors.lastname: Lee
authors.forename: Gwo-Jaw
authors.initials: GJ
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D001837:Body Weights and Measures / Q000379:methods*; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D005413:Flatfoot / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000534:rehabilitation; D005528:Foot / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D011859:Radiography