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Introduction

As the natural history of various specific conditions begins to be defined, it is possible to generate growth curves for those conditions. Although inevitably there are many problems with such growth curves (e.g., heterogeneity, lack of longitudinal data, complicating factors as part of the natural history), they are still very useful because they allow comparison between the individual and what is considered "normal" for the specific condition.

We are including the available growth curves for some of the more common syndromes in the hope that they will be useful and will also encourage the collection of additional data to enlarge the number of cases and the number of disorders for which such information is available.

Age (years)

Age (years)

Figure 17.1 Achondroplasia, height, males, birth to 18 years. Mean and two standard deviations are depicted as indicated. For comparison, range of measurements in typical persons is included. Adapted from Horton et al. (1978).

Age (years)

Age (years)

Figure 17.2 Achondroplasia, height, females, birth to 18 years. Mean and two standard deviations are depicted as indicated. For comparison, range of measurements in typical persons is included. Adapted from Horton et al. (1978).

Weight (kg)

Weight (kg)

Weight (kg) 15 20 25 30 35 40 45 50 55 60 65 70 75 80

Pregnancy And Childbirth

Pregnancy And Childbirth

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