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Erect Penile Dimensions in a Cohort of 778 Middle Eastern Men: Establishment of a Nomogram

Research output: Contribution to journalArticle

Mohamad Habous, Alaa Tealab, Ben Williamson, Saleh Binsaleh, Sherif El Dawy, Saad Mahmoud, Osama Abdelwahab, Mohammed Nassar, John P Mulhall, David Veale, Gordon Muir

Original languageEnglish
Pages (from-to)1402-1406
Number of pages5
JournalJOURNAL OF SEXUAL MEDICINE
Volume12
Issue number6
DOIs
PublishedJun 2015

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© 2015 International Society for Sexual Medicine.

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Abstract

INTRODUCTION: Accurate data regarding the size of the erect penis are of great importance to several disciplines working with male patients, but little high-quality research exists on the subject, particularly in different ethnic groups and for erect penis size.

AIM: The aim of this study was to create a nomogram of erect penile dimensions in a large sample of Middle Eastern men.

METHODS: A retrospective cohort study of 778 men (mean age 43.7; range 20-82) attending urological outpatient clinics in Saudi Arabia was conducted. Exclusion criteria were age under 18 years, a presenting complaint of small or short penis, Peyronie's disease or complaint of congenital curvature, clinical hypogonadism, and previous penile surgery or trauma.

MAIN OUTCOME MEASURES: Three erect penile dimensions following induction of erection using intracavernosal injection of Quadrimix.

RESULTS: Mean patient body mass index (BMI) was 29.09 (standard deviation [SD] 5.76). The mean suprapubic skin-to-penile tip erect length was 12.53 cm (SD 1.93); the mean erect length from the symphysis pubis to the penile tip was 14.34 cm (SD 1.86); and the mean erect shaft circumference was 11.50 cm (SD 1.74). A nomogram was constructed and statistical analysis performed, demonstrating a weak negative correlation between BMI and erect penile length measured from the suprapubic skin (r = -0.283, P < 0.000) but not from bone to tip, and a weak negative correlation between age and both erect penile length measurements (skin to tip r = -0.177, P < 0.0005; bone to tip r = -0.099, P = 0.006).

CONCLUSION: A nomogram for Middle Eastern men can be used as a standard when advising men with small penis anxiety. The importance of measuring erect size and allowing for infra-pubic fat interference in measurement is emphasized. We envisage that this tool can be used to educate and reassure concerned men about the size of their penises. 

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