Abstract: Objective:To compare the effects among the Kirschner wire fixation,steel plate fixation and elastic intramedullary nail intramedullary fixation in the treatment of proximal humerus fractures in older children.Methods:The clinical data of 150 older children with proximal humerus fractures from January 2010 to January 2016 were retrospectively analyzed.The patients were divided into the Kirschner wire group,steel plate group and intramedullary nail group according to the operation way.The differences of the operation time,intraoperative blood loss,incision length,hospitalization time,fracture healing time,Constant score,blood transfusion,excellent prognosis and incidence rate of complications among three groups were compared.Results:The operation time,intraoperative blood loss and incision length in plate group,Kirschner wire group and intramedullary nail group gradually decreased(P<0.01).The differences of the hospitalization time,fracture healing time,postoperative 1 and 3 months Constant scores,intraoperative blood transfusion,excellent rate of prognosis and incidence rate of complications among three groups were not statistically significant(P>0.05).Conclusions:Elastic intramedullary nail intramedullary fixation treatment has little operation time,intraoperative blood loss and incision length,and quick healing,which is an ideal treatment means,and worthy of promotion.