Comparing Penile Measurements in Normal and Erectile Dysfunction Subjects

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). Kamel I, Gadalla A, Ghanem H, and Oraby M. Comparing penile measurements in normal and erectile dysfunction subjects. J Sex Med 2009;6:2305-2310.