The official name of bone age (bone age, skeletal age) is: skeletometric age.
1, what is bone age: human growth and development can be expressed in two “ages”, namely, the age of life (calendar age) and biological age (bone age). Bone age is short for skeletal age and is determined with the help of a specific image of the bone in an X-ray camera. In order to find out the age of a person’s bones, an X-ray of the wrist of the left hand is usually taken, through which the doctor observes the degree of development of the metacarpal phalanges, wrist bones and the ossification centers of the lower radius and ulna of the left hand. It is a biological age that reflects the degree of physical development by measuring the changes in size, form, structure and interrelationship of bones, and expresses it in the form of age in years through statistical processing.
2, standard bone age film shooting method: standard bone age film, only need to take a left hand orthopantomograph. When taking the film, the five fingers of the left hand are naturally opened, the palm of the hand is down, the middle finger and the forearm are kept in a straight line (try not to deviate from the left and right, the arm is flattened and not lifted up), the X-ray bulb is aligned with the third metacarpal bone, and the distance between the bulb and the X-ray film is about 80CM.
3, factors affecting bone development: many diseases affect bone development, making it into advance or backward, such as adrenal cortical hyperplasia or tumor.