Automated determination of bone age in a modern chinese population.

Rationale and Objective. Large studies have previously been performed to set up a Chinese bone age reference, but it has been difficult to compare the maturation of Chinese children with populations elsewhere due to the potential variability between raters in different parts of the world. We re-analysed the radiographs from a large study of normal Chinese children using an automated bone age rating method to establish a Chinese bone age reference, and to compare the tempo of maturation in the Chinese with other populations.

[Reference values of differences between TW3-C RUS and TW3-C Carpal bone ages of children from five cities of China].

Objective: The determination of skeletal maturity has an important role in pediatric clinical practice, especially in relation to endocrinological problems and growth disorders, and it is frequently useful in diagnosis and monitoring treatment. It has been suggested that the difference between radius, ulna and short bonse (RUS) and carpal may be of differential diagnostic significance. However, no data on comparison among bone ages of Chinese children are available.

[Relationship of certain skeletal maturity indicators of hand and wrist with adolescent growth spurt].

Objective: To investigate the relationship of certain skeletal maturity indicators of hand and wrist with adolescent growth spurt.

Methods: 14 757 normal urban children, 7373 boys and 7384 girls, aged 7 - 20, all of Han nationality, from Shanghai, Guangzhou, Wenzhou, Dalian, and Shijiazhuang underwent measurement of height and weight, and left wrist anterior-posterior radiography. The incremental curve was fitted graphically according to the differences between the means for height at series ages.