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Objective To understand the Han adolescents knee and ankle Minister of bone development in Yantai , Yantai region a new adolescent bone age evaluation criteria to provide reliable data . Randomly selected Yantai 10 to 25 - year - old healthy Han Chinese Youth 1668 , male 815 , female 853 , take a knee and ankle anteroposterior film to observe the long bone metaphyseal fusion , calculate the long bone metaphyseal fusion time , and development indicators . The results of the knee and ankle Minister metaphyseal bone fusion in chronological order : distal fibula , distal tibia , distal femur , proximal fibula , proximal tibia ; Minister of ankle bone fusion was earlier than that knee bone of Ministers fusion ; the metaphyseal integration time male significantly younger than the female . Fibula distal and proximal tibia metaphyseal fusion time and youth height, a positive correlation between body weight and leg length . HAN YOUNGSTERS the conclusion Yantai bone development has accelerated the trend , the results can anthropology, forensic science and clinical medicine accumulation of research data .
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