title: Penile length in the flaccid and erect states: guidelines for penile augmentation.
abstract: OBJECTIVE
  We provide guidelines of penile length and circumference to assist in counseling patients considering penile augmentation.
  
  
  METHODS
  We prospectively measured flaccid and erect penile dimensions in 80 physically normal men before and after pharmacological erection.
  
  
  RESULTS
  Mean flaccid length was 8.8 cm., stretched length 12.4 cm. and erect length 12.9 cm. Neither patient age nor size of the flaccid penis accurately predicted erectile length. Stretched length most closely correlated with erect length.
  
  
  CONCLUSIONS
  Only men with a flaccid length of less than 4 cm., or a stretched or erect length of less than 7.5 cm. should be considered candidates for penile lengthening.
authors.affiliation: Department of Urology, University of California School of Medicine, San Francisco, USA.
authors.forename: H
authors.initials: H
authors.lastname: Wessells
authors.forename: T F
authors.initials: TF
authors.lastname: Lue
authors.forename: J W
authors.initials: JW
authors.lastname: McAninch
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D006801:Humans; D008297:Male; D008875:Middle Aged; D010410:Penile Erection; D010413:Penis / Q000033:anatomy & histology* / Q000601:surgery; D011446:Prospective Studies; D012016:Reference Values; D012044:Regression Analysis