To observe the clinical effect of closed reduction and retrograde elastic stable intramedullary nailing fixation and bone wire internal fixation for displaced surgical neck fracture of humerus in elder children.

Forty-five cases of displaced humeral surgical neck fractures in children and adolescents who met the inclusion criteria from May 2016 to December 2018 in the Renmin Hospital of Hubei Uiversity, were retrospectively analyzed. They were divided into two groups according to different internal fixation methods: the intramedullary nailing group (23 cases) were treated with retrograde elastic stable intramedullary nailing; the Kirschner wire group (22 cases) were treated with closed reduction and Kirschner wire fixation. The t test and chi square test were used to analyze the fracture healing time, shoulder function score, number of complications and excellent and good rate.

The fracture healing time was (8.0±2.1)weeks. There was stattstically significant difference in the functional score of six weeks after operation (t =5.295, P<0.05); there was no stattstically significant difference in the functional score of three months after the operation (P>0.05). The rate of patients who achieved excellent results in shoulder joint function was 88.9%, while the good rates between the two groups showed no significant statistical difference(χ²=0, P>0.05). In the intramedullary nailing group, one case had radial nerve injury, two cases had elastic stable intramedullary nailing penetration, and four cases lost the reduction. In the group of internal fixation of bone wires, there were four cases of bone wires loosening, three cases of reduction loss, no complication of vascular or nerve injury.

It is a minimally invasive and effective treatment method to treat the displaced fracture of surgical neck of humerus in children by using etrograde elastic stable intramedullary nailing and bone wires internal fixation, which is worthy of clinical application. Surgeens should choose the familiar operation method to avoid complications.