![]() In 1970, white boys reached the last Tanner stage, the postpubertal stage, on average at the age of 14.9 years and girls around the age of 14 depending on social class and the particular study. Males also stop growing and reach their adult height during Tanner V usually this happens in their late teens at 16-17 years for males. Usually, this happens in their mid teens at 14 or 15 years for females. Illustration of the Tanner scale for females Tanner I no glandular tissue: areola follows the skin contours of the chest ( prepubertal) Tanner II breast bud forms, with small area of surrounding glandular tissue areola begins to widen Tanner III breast begins to become more elevated, and extends beyond the borders of the areola, which continues to widen but remains in contour with surrounding breast Tanner IV increased breast sizing and elevation areola and papilla form a secondary mound projecting from the contour of the surrounding breast Tanner V breast reaches final adult size areola returns to contour of the surrounding breast, with a projecting central papilla Pubic hair (both male and female) Tanner I no pubic hair at all ( prepubertal) Tanner II small amount of long, downy hair with slight pigmentation at the base of the penis and scrotum (males) or on the labia majora (females) Tanner III hair becomes more coarse and curly, and begins to extend laterally Tanner IV adult-like hair quality, extending across pubis but sparing medial thighs Tanner V hair extends to medial surface of the thighs Height ĭuring Tanner V, females stop growing and reach their adult height. The Tanner scale has also been used in forensics to determine aging, but its usage has decreased due to lack of reliability. In HIV treatment, the Tanner scale is used to determine which regimen to follow for pediatric or adolescent patients on antiretroviral therapy (adult, adolescent, or pediatric guidelines). Among researchers who study puberty, the Tanner scale is commonly considered the "gold standard" for assessing pubertal status when it is conducted by a trained medical examiner. ĭue to natural variation, individuals pass through the Tanner stages at different rates, depending in particular on the timing of puberty. This scale was first identified in 1969 by James Tanner, a British pediatrician, after a two-decade-long study following the physical changes in girls undergoing puberty. The scale defines physical measurements of development based on external primary and secondary sex characteristics, such as the size of the breasts, genitals, testicular volume and development of pubic hair. The Tanner scale (also known as the Tanner stages or Sexual Maturity Rating (SMR)) is a scale of physical development in children, adolescents and adults. Physical development scale of children, adolescents, and adults Tanner scaleĭefines physical measurements of development ![]()
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