What is dwarfism?
The diagnosis of dwarfism (suggesting the presence of a disease affecting growth and development) is made when the present height is less than or equal to the dwarf height value for the corresponding age in the table above, and is short when the height is between the dwarf value for the corresponding age and the average height value. However, it is the bone age that is a reliable indicator of the response to the later growth space, and not only by age. If an 8-year-old child is the same height as the normal average height, but if his or her bone age is already 11 years old because of early development, he or she is short compared to the average height of 11-year-old children, and the adult height will meet the diagnostic criteria for dwarfism. However, if the same 8-year-old child is about 5CM below the average height, but the bone age is slightly behind, only at 7 years old, (the difference between bone age and age should not exceed 2 years for normal people, and more than 2 years is considered abnormal), the adult height may be completely normal.
Is it possible to roughly determine the space for natural growth in later life or roughly predict adult height by using the bone age and normal height table?
Although the normal height table is differentiated by age, however, the age of a normal person should roughly match the bone age, especially with the results of a large sample group survey. Although age is also used as a basis for determining whether the diagnostic criteria for dwarfism are met, for a particular child, bone age is used as a basis for determining later growth span or as a rough predictor of adult height, because bone age reflects later growth potential. For example, if the bone age is 13 years old and the average height of a 13-year-old boy is 159.5 CM, the natural growth space in later life is the average adult height of the boy minus the average height of the corresponding bone age, i.e., 172.1 – 159.5 = 12.6 CM. If a boy’s current height is 150 CM and his bone age is 13 years old, his natural growth space in later life is also around 12.6 CM. The predicted adult height should be around 162.5CM.
How do I measure my height accurately?
Accurate height measurement requires “four things”: 1. the same measurement time (there is a difference in human height in the morning and evening).
2, the same standard height measuring tape (when measuring at home, you can also put a piece of paper on the wall and then measure the height after drawing a line, but the tape on the top of the head must be perpendicular to the wall, preferably with a triangular ruler).
3, the same measurer (different people may have differences in the tightness of the calipers when measuring).
4, the same standing method of the person being measured (requires that both feet are aligned and leaning together, heels, hips, back and head are against the wall, and when the head is against the wall must pay attention to both eyes flat, not too tilted.
Boys with height below 71.2cm at 1 week of age and 81.6cm at 2 weeks of age can be diagnosed with dwarfism; girls with height below 69.7cm at 1 year of age and 80.5cm at 2 weeks of age can be diagnosed with dwarfism.