title: Comparing penile measurements in normal and erectile dysfunction subjects.
abstract: BACKGROUND
  With the increase in penile augmentation procedures it becomes important to assess what is the normal erect penile size in both potent men and men with erectile dysfunction (ED).
  
  
  OBJECTIVE
  The aim of this work is to define the average stretched penile size in normal men and ED patients.
  
  
  METHODS
  Penile length and girth.
  
  
  METHODS
  This study included 1,027 adult men presenting to a university hospital outpatient clinic. Two groups of patients were included in this research work. Group I comprises normal adult men (949) and Group II, ED patients (78). There were no differences of race, age, height, and weight. Penile length and girth were measured using a tape measure and rigid ruler in the fully stretched states in both groups. All penile measurements were performed by the same physician.
  
  
  RESULTS
  In normal men (Group I) the mean of the fully stretched length was 12.9 +/- 1.9 cm and the mean of the fully stretched girth was 8.9 +/- 0.9 cm. In ED patients (Group II), the mean of the fully stretched length was 11.2 +/- 1.5 cm and the mean of fully stretched girth was 8.8 +/- 0.8 cm. Comparing the mean of fully stretched penile lengths in both groups revealed statistical significant difference (P < 0.001) between them, whereas comparing the mean of fully stretched penile girths in both groups revealed statistical nonsignificant difference (P = 0.474) between them. There were significant positive correlations between fully stretched penile lengths and fully stretched penile girths in both groups.
  
  
  CONCLUSIONS
  The average of fully stretched penile length in normal potent men is 12.9 cm, whereas the patients with ED tend to have significantly shorter penises (11.2 +/- 1.5 cm).
authors.affiliation: Cairo University, Department of Andrology, Sexology, and STDs, Faculty of Medicine, Cairo, Egypt. kamelihab@yahoo.com
authors.forename: Ihab
authors.initials: I
authors.lastname: Kamel
authors.forename: Amr
authors.initials: A
authors.lastname: Gadalla
authors.forename: Hussein
authors.initials: H
authors.lastname: Ghanem
authors.forename: Mohamed
authors.initials: M
authors.lastname: Oraby
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D004534:Egypt; D007172:Erectile Dysfunction; D006305:Health Status Indicators; D006801:Humans; D018783:Impotence, Vasculogenic; D008297:Male; D008875:Middle Aged; D010413:Penis / Q000033:anatomy & histology*; D012016:Reference Values; D013223:Statistics as Topic; D055815:Young Adult