Penile Length in the Flaccid and Erect States

Guidelines for Penile Augmentation

Wessells, Hunter
Lue, Tom F.
McAninch, Jack W.

From the Department of Urology, University of California School of Medicine and San Francisco General Hospital, San Francisco, California.
Accepted for publication March 1, 1996.
(H. Wessells) Current address: Section of Urology, University of Arizona, 1501 N. Campbell Ave., Tucson, Arizona 85724.
(J. W. McAninch) Requests for reprints: Department of Urology, U-575, University of California, San Francisco, California 94143-0738.

Journal of Urology 156(3):p 995-997, September 1996.

Purpose

We provide guidelines of penile length and circumference to assist in counseling patients considering penile augmentation.

Materials and 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.