title: Design and validation of an instrument package designed to increase the reliability of ankle range of motion measurements.
abstract: OBJECTIVE
  To validate a novel device termed the equinometer, which is designed to accurately measure ankle dorsiflexion.
  
  
  METHODS
  Test retest reliability analysis using serial measurements of dorsiflexion endpoint in a group of normal individuals.
  
  
  METHODS
  Motion analysis laboratory.
  
  
  METHODS
  Ten healthy individuals.
  
  
  METHODS
  The mean and standard deviation of the absolute difference in dorsiflexion endpoint for the group.
  
  
  RESULTS
  The mean absolute change in dorsiflexion endpoint for the group was 0.45 degrees with a standard deviation of 0.43 degrees.
  
  
  CONCLUSIONS
  With the use of the device described, the mean change in dorsiflexion endpoint was well within acceptable clinical limits. The reliability of measurements obtained with the equinometer exceeds that which has been published with other techniques and devices.
authors.affiliation: Harborview Medical Center, Department of Rehabilitation Medicine, Seattle, WA 98104-2499, USA.
authors.forename: K
authors.initials: K
authors.lastname: Weaver
authors.forename: R
authors.initials: R
authors.lastname: Price
authors.forename: J
authors.initials: J
authors.lastname: Czerniecki
authors.forename: B
authors.initials: B
authors.lastname: Sangeorzan
mesh_terms: D000328:Adult; D000843:Ankle Joint / Q000502:physiology*; D004863:Equinus Deformity / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009983:Orthopedic Equipment; D016059:Range of Motion, Articular; D012984:Software