Related Experiment Video
Updated: Jun 23, 2026

04:22
Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
Published on: May 30, 2025
Comparing penile measurements in normal and erectile dysfunction subjects.
Ihab Kamel1, Amr Gadalla, Hussein Ghanem
1Cairo University, Department of Andrology, Sexology, and STDs, Faculty of Medicine, Cairo, Egypt. kamelihab@yahoo.com
The Journal of Sexual Medicine
|May 21, 2009
Summary
The average erect penile length for potent men is 12.9 cm. Men with erectile dysfunction (ED) have a significantly shorter average erect penile length of 11.2 cm.
Area of Science:
- Urology
- Andrology
- Sexual Medicine
Background:
- Increasing prevalence of penile augmentation procedures necessitates understanding normal erect penile dimensions.
- Establishing baseline erect penile size is crucial for both potent individuals and those with erectile dysfunction (ED).
Purpose of the Study:
- To determine and compare the average stretched penile size in adult men with and without erectile dysfunction (ED).
Main Methods:
- A study involving 1,027 adult men, divided into a control group (949 potent men) and a patient group (78 men with ED).
- Penile length and girth were measured in a fully stretched state using standardized tools by a single physician.
- Demographic factors such as age, height, and weight were consistent across both groups.
Main Results:
- The mean fully stretched penile length was 12.9 ± 1.9 cm in potent men and 11.2 ± 1.5 cm in men with ED (P < 0.001).
- The mean fully stretched penile girth was 8.9 ± 0.9 cm in potent men and 8.8 ± 0.8 cm in men with ED (P = 0.474).
- A statistically significant difference was observed in penile length but not girth between the two groups.
Conclusions:
- Normal potent men exhibit an average fully stretched penile length of 12.9 cm.
- Men diagnosed with erectile dysfunction (ED) tend to have statistically shorter penises compared to their potent counterparts.
- Penile length and girth demonstrated a significant positive correlation in both study groups.
Related Concept Videos
Disorders of the Male Reproductive System
Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
Penis
The penis serves a dual role in sexual reproduction and urination. It consists of three main regions: the glans penis, the body, and the root, each with distinct functions and unique anatomical features.
Anatomy of the Penis
The glans penis, or the head, is the terminal part of the penis and houses the external urethral orifice, the exit point for urine and semen. Covered by the prepuce, or foreskin, the glans is noted for its sensitivity and plays a key role in sexual pleasure. The body of the...
Anatomy of the Penis
The glans penis, or the head, is the terminal part of the penis and houses the external urethral orifice, the exit point for urine and semen. Covered by the prepuce, or foreskin, the glans is noted for its sensitivity and plays a key role in sexual pleasure. The body of the...
Male Sexual Response: Erection & Ejaculation
Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
