RESUMEN
OBJECTIVE@#To study the current development of hand-wrist bones of adolescents in China, and establish special forensic bony age standard for estimating 14 years of criminal responsible age in female adolescents.@*METHODS@#One hundred and ten healthy girls aged from 13 years and 9 months to 14 years and 3 months in Lengshuijiang district of Hunan province were enrolled in this study. X-ray films of their left hand-wrists were taken dorsaventrally, and 15 sites on the wrist x-ray films were examined and measured under standard condition. The development grade was confirmed by maximal percentage to establish a method to estimate the bony age, which was then checked by single blind method.@*RESULTS@#Development grade of the radius, the middle third phalanx and the fourth phalanx was partially closed (> 2/3), and the rest was wholly-closed with existence of the epiphyseal line. The development grade of the middle third phalanx and fourth phalanx was different between the younger group (< 14 years, partially closed, > 2/3) and the older group (> 14 years, mostly closed with existence of only epiphyseal line). The cross diameter of the osteoepiphysises were wider than that of all the diaphysises. The confirmed accuracy (in 30 girls) was 83.3%.@*CONCLUSION@#Our study seemes to be feasible in establishing the estimation standard for bony age determination. The standard established by developmental metaphysis and authropometry may be particularly helpful in forensic practice for estimation of accurate criminal responsible age in adolescents.
Asunto(s)
Adolescente , Femenino , Humanos , Determinación de la Edad por el Esqueleto/métodos , Epífisis/diagnóstico por imagen , Antropología Forense/métodos , Huesos de la Mano/diagnóstico por imagen , Radio (Anatomía)/diagnóstico por imagen , Estándares de Referencia , Muñeca/diagnóstico por imagenRESUMEN
OBJECTIVE@#To describe characteristic of hand-wrist bone development in adolescents of 14 years old in China, and to estimate trend of bone development of them.@*METHODS@#A total of 109 adolescents of 14 years was selected as subjects (males: 53, females: 56). X-rays examination of their left hand-wrist bone were performed and analyzed. The development characteristics of each position in accordance with Gu's mapping of skeletal age were compared with Gu's results and ours.@*RESULTS@#Compared with Gu's, osteoepiphysis of distal radius, the first metacarpal bone, the fourth proximal phalanx were more advanced in boys, osteoepiphysis of distal radius, the second-fifth metacarpal bones, the first-fifth proximal phalanxs, and the second-fifth middle phalanxs were more advanced in girls.@*CONCLUSION@#The results suggested that a forward trend of 14 years old adolescents bone development currently exists in our country, especially in girls. As an important age of criminal responsibility, this forward trend of development of bones among adolescents currently should be kept in mind when estimating bone age of criminals.
Asunto(s)
Adolescente , Femenino , Humanos , Masculino , Determinación de la Edad por el Esqueleto/métodos , Desarrollo Óseo/fisiología , Antropología Forense , Huesos del Metacarpo/diagnóstico por imagen , Radio (Anatomía)/diagnóstico por imagen , Articulación de la Muñeca/diagnóstico por imagenRESUMEN
OBJECTIVE@#To study the bone development in adolescents in China, and establish forensic skeletal age standard for estimation of the criminal responsible age in 14 years old male adolescents.@*METHODS@#One hundred and three healthy boys aged from 13 years and 9 months to 14 years and 3 months in Lengshuijiang, Hunan, China were enrolled in this study. X-ray films of their left hand-wrist were taken dorsaventrally, and 15 selected sites on the wrist X-ray films were examined and measured under standard condition. The development grade was confirmed by maximum percentage to establish a method to estimate the bone age, which was then checked by single blind method.@*RESULTS@#Development grade of the first metacarpal bone and the first phalanx IV was partially closed (less than 1/3), but the rest was non-closed. The cross diameters of all the osteoepiphysis were wider than that of all the diaphysis. The development grade of the fourth metacarpal bone and the fifth metacarpal bone as well as the adjacent third phalanx were different in both younger age group (<14 years, mostly non-closed) and the older age group (>14 years, mostly closed). The confirmed accuracy (in 30 boys) was 80%.@*CONCLUSION@#Our study seems to be feasible in establishing the estimation standard for skeletal age determination using developmental metaphysis and anthropometry. The standard may be particularly helpful in forensic practice for estimation of accurate criminal responsible age in adolescents.
Asunto(s)
Adolescente , Humanos , Masculino , Determinación de la Edad por el Esqueleto/métodos , Antropometría/métodos , Desarrollo Óseo/fisiología , Huesos del Carpo/crecimiento & desarrollo , Antropología Forense/métodos , Huesos de la Mano/crecimiento & desarrollo , Huesos del Metacarpo/crecimiento & desarrollo , Valores de ReferenciaRESUMEN
OBJECTIVE@#To study the accurate of Li Guozhen's Percent Numeration and the Development Standard of Chinese Wrist Bone CHN Numeration of age estimation in 14-year-old females.@*METHODS@#Fifty-one 14-year-old females from three middle schools in Loudi City in Hunan were selected randomly, whose left wrists were photographed with X-rays under the same condition. Skeletal age was estimated following the two numerations. The two skeletal ages were compared with each other and with chronological age.@*RESULTS@#The skeletal age from Percent Numeration and CHN Numeration have no significance difference, P > 0.05. And the skeletal ages of the two Numerations have no significance difference either, P > 0.05.@*CONCLUSION@#The Percent Numeration and the CHN Numeration are still suited for age estimation in 14-year-old females.