Diagnostic and Interventional Radiology
Head and Neck Imaging - Original Article

A practical formula for determining growth

1.

Department of Orthodontics, Gazi University School of Dentistry, Ankara, Turkey

2.

Department of Orthodontics, Gazi University School of Dentistry, Ankara, Turkey; Department of Biostatistics, Ankara University School of Medicine, Ankara, Turkey

3.

Department of Biostatistics, Ankara University School of Medicine, Ankara, Turkey.

Diagn Interv Radiol 2017; 23: 194-198
DOI: 10.5152/dir.2016.16334
Read: 496 Downloads: 128 Published: 03 September 2019

Abstract

PURPOSE: We aimed to establish a practical method to evaluate skeletal age using cervical vertebrae.

 

METHODS: The study consisted of hand-wrist and cephalometric radiographs of 324 subjects (167 girls, 157 boys; age range, 7.3–17.2 years). Skeletal ages of the subjects were calculated from hand-wrist radiographs, and cervical vertebral bodies were measured using cephalometric radiographs. A single formula based on C3 and C4 vertebral body heights with different coefficients for each gender was derived using ridge regression analysis.

 

RESULTS: The correlation coefficients for vertebral and hand-wrist bone age were 0.825 and 0.856 for girls and boys, respectively. The correlations among vertebral bone age and C3 and C4 vertebral body heights were also found to be significant. The intraclass correlation (ICC) score was found to be 0.914, which shows high consistency between the two measurements of the same investigator for each C3 and C4 vertebral body height result.

 

CONCLUSION: The formula derived for evaluating skeletal age in cephalometric radiographs is reliable and can be applied to both girl and boy subjects for legal requirements or therapeutic needs of age estimation.

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