How closed are the bones?

Most families now have only one child, and many parents pay great attention to their children, taking care of them in every aspect from their studies to their growth. Many people are worried that their children will not grow tall. In fact, height is related to genetic factors and acquired nutrition. Many parents want to know, at what age will the child's bones close?

Generally, the epiphyseal line closes at the age of 20 for women and 22 for men, and the growth space is smaller at this time. In general, an epiphyseal examination is performed. Some close later, and some close earlier. During adolescence, there is a growth spurt, and the annual height increase rate is generally 3 to 5%. The annual increase is generally 5 to 7 cm, and can reach 10 to 12 cm in some cases. After a few years, the growth rate slows down again until the height stops increasing when girls are 20 years old and boys are 22 years old.

When do children and adolescents grow fastest during puberty? Studies have confirmed that the peak height growth for the vast majority of Han Chinese children is around 12 years old for girls and around 14 years old for boys; more than 90% of girls have the fastest height growth between the ages of 11 and 13, and for boys between the ages of 13 and 15. Attention should be paid to issues such as nutrition and exercise during the rapid growth period. Gradually growing taller during the growth process is the result of bone growth and development, and it is mainly manifested in the growth of lower limb bones and spine.

The growth of the bones of the lower limbs is caused by the growth plates of the femur and tibia. The growth plates are located at both ends of the bones. Stimulated by the growth hormone secreted by the pituitary gland, they will continuously proliferate cartilage. The new cartilage will calcify to form hard bone, so that the bones become longer and wider.

The fastest growth period in a child's life is from birth to one year old, and then the speed gradually slows down until the child enters puberty, when sex hormones are activated and growth hormones interact, and the child's height and weight begin to increase rapidly again. How tall we can grow depends on the closure of the growth plates throughout the body. If the growth plates are closed, it means that the bones have matured, the bones will no longer grow, and the height will no longer increase.

From the above introduction, we can see that, generally speaking, when women are 20 years old and men are 22 years old, their bones will close, their bodies will stop growing, and their height will no longer increase. Bone closure has a lot to do with the individual's physical condition. Understanding some issues related to children's growth is very helpful to their growth.