At Tanner stage IV, how much does the penis grow in length?

At Tanner stage IV of male sexual maturation, the penis typically grows in length to about 10 centimeters. This stage is characterized by the continued development of secondary sexual characteristics, including increased growth of the penis and scrotum, as well as the darkening of the scrotal skin.

The Tanner stages are used to assess the physical development in adolescents, and the specific measurements in each stage, including penile growth, are based on clinical observations of average growth patterns. Understanding these stages is crucial in pediatrics and adolescent medicine, as they help to evaluate normal growth and development in young males.

In Tanner stage IV, the penile growth is generally less than in stage V, which represents full maturity. This midpoint stage indicates significant development while still allowing for more growth to occur in later stages.