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Growth Rates by Age | ||
1-6 months | 18-22 cm/yr | |
6-12 months Endocrinologic Disorders, Abnormalities of Linear Growth, Tall Stature, Short Stature | 14-18 cm/yr | |
1 yr | 11 cm/yr | |
2 yrs | 8 cm/yr | |
3 yrs | 7 cm/yr | |
4-puberty | 5-6 cm/yr |
B. Between 2 years of age and the onset of puberty, children maintain the same percentile on growth curve. A growth rate of growth less than 5 cm/yr after age 3 years, requires further assessment.
C. Deviations from the normal pattern endocrinologic disorders, abnormalities of linear growth can be caused by to wide variety of endocrine and non-endocrine disorders.
II. Short Stature
A. Defined as height below the third endocrinologic disorders, abnormalities of linear growth, tall stature, short stature, midget, short height percentile (<1.88 SD) for age and sex. The pattern of growth, rather than absolute position on growth curve, is the most critical factor.
Epidemiology of Short Stature | |
Normal variants (Familial/constitutional) | 80% |
Medical endocrinologic disorders, abnormalities of linear growth, tall stature, short stature, midget, short height causes |