Tanner scale for girls and boys

The Tanner Scale is a tool used to assess the puberty of girls and boys and is used primarily by pediatricians. What is the Tanner scale, where did it come from and what is it for?

1. What is the Tanner scale?

The Tanner Scale is a tool that is used to assess puberty in children and adolescents. Creator of the Tanner scale was a British pediatrician James Tannerwho created two kinds of scales: one for girls and one for boys.

Working with the Tanner scale. it is quite simple and fast and allows you to detect significant deviations in the development of the child. The Tanner score for both boys and girls can range from I to V. Grade I is the very beginning of puberty, and Grade V, the last, is full puberty.

2. Tanner scale in girls.

In girls, the assessment of puberty is based on an assessment of the structure of the mammary glands and pubic hair.

class I - Nipples slightly raised, no pubic hair. II class - slightly arched chest, enlargement of the nipples and the appearance of the first single hairs in the pubic area.

III class - enlargement of the mammary glands, nipples and mammary glands. Pubic hair becomes more and more visible and begins to appear on the pubic mound.

IV stage - a fairly well-defined chest and fairly thick hair in the pubic area, hair does not yet appear in the hips. V class - the areolas of the nipples are more pigmented, the breasts are more rounded, and the pubic hair begins to descend to the hips.

3. Tanner scale in boys.

In order to assess the degree of puberty in a boy, it is necessary to assess the size and structure of the testicles, scrotum and penis, as well as hair growth in the genital area.

XNUMX degree - this is the beginning of puberty, the volume of the testicles is less than 4 ml and does not exceed 2.5 cm. The scrotum and penis are the same as in childhood, and there is no hair in the intimate area.

XNUMX degree - the testicles have a volume of more than 4 ml and their sizes range from 2.5 cm to 3.2 cm, the penis begins to lengthen and expand slightly, the first single hairs appear, usually around the back of the penis.

XNUMXrd degree - the testicles are much larger, their volume reaches 12 ml. The penis gets bigger and the scrotum gets bigger. Pubic hair is still mostly found around the back of the penis, but it is getting thicker and denser.

XNUMX degree - the testicles reach 4,1-4,5 cm, the penis becomes longer and thicker. The hair becomes thicker and stronger, but does not yet reach the hips. More pigmentation of the skin of the scrotum also appears at this stage.

XNUMXrd degree This is the stage of reaching puberty. The size of the testicles exceeds 4,5 cm, hair also appears around the thighs. The scrotum and penis are the size of an adult male.

Certain instruments are used to assess the degree of puberty in boys. Testicular volume is measured with orchidometer, it consists of 12 or more oval structures of various sizes, which are usually strung on a thread.

Each of these structures corresponds to different volumes, usually in the orchidometer there are ovals corresponding to volumes from 1 to 25 ml.

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