The May 2012 issue of the Journal of Forensic Sciences has an article assessing the Greulich-Pyle method of skeletal age estimation. The study, by Cantekin, et al., analyzed left hand/wrist roentgenograms (x-ray photographs) for a sample of 767 Caucasian eastern Turkish sub-adults, aged 7 through 17, with known chronological age and gender. Although some unacceptably high standard deviations occurred in individual age groups, the difference between bone age mean and chronological age mean for males and females was not statistically significant. These findings reinforce the utility of GP estimation.
"FIG 1--Scatter plot of bone age versus chronological age in girls"
"FIG 2--Scatter plot of bone age versus chronological age in boys"
Bone Age Assessment: The Applicability of the Greulich–Pyle Method in Eastern Turkish Children
J Forensic Sci, May 2012, Vol. 57, No. 3 doi: 10.1111/j.1556-4029.2011.02035.x
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