Correlation of the Ossification Present in Hand-Wrist Bone Radiography with Chronological Age in Students of the Elementary School Federico Stallforth in Parral, Chihuaha
Abstract:
Objective: Test the hypothesis that there is a relationship between the ossification of the bones of the hand and wrist with chronological age.
Material and methods: The collection of hand and wrist radiographs were obtained from children between 6 and 13 years old, of both genders. The study was longitudinal for two years, two x-rays of the left hand and wrist were taken; one at the beginning of the study and the other one a year later. The radiographs were taken in the same device and by a single observer. Bone maturation was measured according to Björk's Analysis through 9 stages.
Results: It was found that the Chi-square value (61.09) and the significance of P = 0.000 indicate that there is a high dependence between bone age and gender and the Chi-square value (73.16) and the significance of P = 0.000 indicate that there was a high dependence between bone age and gender for 2008. According to the Wilcoxon test, it was found that the Z value (9.60) and the significance P= (0.000), indicate that there was a high significant difference between the stages for women. The Z value (9.51) and significance (0.000) indicate that there was a high significant difference between the stages for men.
Conclusion: It was concluded that chronological age was highly related to bone age since in the second x-ray taken the following year, all children had a change from 1 to 2 stages. Girls grew faster than boys, a small percentage had already finished growing by the age of 12.5, while boys were about to enter their growth peak.
