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INTRODUCTION rnBefore the growth and development of brain,or before or after birth, if the brain was injured by damage or injury,permanet,partial or all of the extremeties may harbor motor or positional abnormorlites. This kind of the abnormality is changed with the development of the infant.At the same time,there were different problems and priority development points at different growth stage and can be classified as infant age, school age and puberty age. rn