title: Digital planimetry results in more accurate wound measurements: a comparison to standard ruler measurements.
abstract: BACKGROUND
  Cutaneous wound measurements are important to track the healing of a wound and direct appropriate therapy. The most commonly used method to calculate wound area is an estimation by multiplying the longest length by the widest width. Other devices can provide an accurate and precise measurement of the true area (TA). This study aim was to compare wound areas calculated by computerized planimetry with standard area estimation by multiplying the longest length by the widest width (l x w).
  
  
  METHODS
  We reviewed the wound records of 10 patients with circular or oval wounds and estimated the area with the l x w method. We compared this with the TA obtained by a specialized planimetric camera.
  
  
  RESULTS
  Average wound size was 4.3 cm(2) by l x w estimation and 3 cm(2) by TA calculation. We found the l x w method overestimated wound area an average of 41%.
  
  
  CONCLUSIONS
  Standard, manual (l x w) measurement of cutaneous wounds inaccurately overestimates wound area by roughly 40%.
authors.affiliation: Amputation Prevention Center, Valley Presbyterian Hospital, Los Angeles, California, USA. Lee.C.Rogers@gmail.com
authors.forename: Lee C
authors.initials: LC
authors.lastname: Rogers
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Bevilacqua
authors.forename: David G
authors.initials: DG
authors.lastname: Armstrong
authors.forename: George
authors.initials: G
authors.lastname: Andros
mesh_terms: D048909:Diabetes Complications / Q000473:pathology*; D017719:Diabetic Foot / Q000473:pathology; D006801:Humans; D007871:Leg Ulcer / Q000473:pathology; D012015:Reference Standards; D012815:Signal Processing, Computer-Assisted; D012867:Skin / Q000473:pathology; D012883:Skin Ulcer / Q000473:pathology*; D014945:Wound Healing; D014947:Wounds and Injuries / Q000473:pathology*