Age Estimation by Using Radiological Methods and Its Comparison with Clinical Examination
Many researchers paid attention to this subject and the different methods used for age estimation. The first persons to work on this issue was Pryor (1928) who undertook studying the time of appearance of the ossification center of the wrist bone and Krojman (1939) who studied time of epiphysis union. There were several different studies also done on the subject. There was some controversy in the determination of time of appearance of ossification centers and fusion of epiphysis, due to different factors including: sex, nutrition, hereditary factor, geographical area, and race. There is special practical importance for age estimation in determining the age of certain individuals without birth certificate , who are attending school , getting married , joining the military draft , determination of criminal responsibility , and criminal abortion , it appears from all of the above that age establishment has a paramount importance in many situations . The radiological examination constitutes a quick and precise method for estimating the age in persons who are 25 years of age or less, in addition to the clinical examination such as weight, height, teeth, and signs of physiological puberty. In persons more than 25 years of age, it is impossible to estimate age precisely by radiological examination, due to complete appearance of ossification center and fusion of epiphysis. At the end of skeletal growth and development, only a few age dependent features like development of third molars and the bones of the hand and wrist remain to be used for age estimation by morphological methods, which result in a less accurate estimation of age.