Abstract: ［Abstract］Objective〖HTSS〗To observe the efficacy of closed reduction intramedullary nailing and locking plate internal fixation in elderly patients with humeral surgical neck fractures and their impact on shoulder joint function.
〖HTH〗〖WTHZ〗Methods〖HTSS〗The 86 elderly patients with fractured humeral neck fracture were divided into observation group and control group according to different internal fixation methods, each group had 43 cases. Control group was performed with open reduction and locking plate fixation, the observation group was given with closed reduction and intramedullary nailing. The clinical efficacy, complications rate, incision length, operation time, intraoperative blood loss, fracture healing time, Constant-Murley score, postoperative neck shaft angle and shoulder joint activity were compared between two groups after treatment.
〖HTH〗〖WTHZ〗Results〖HTSS〗There was no significant difference in clinical efficacy and total excellent rate between the two groups(P＞005). The length of incision, operation time and fracture healing time in the observation group were significantly shorter compared with the control group, and the intraoperative blood loss was also significantly lower than that of the control group, and the difference was statistically significant(P＜0.05). There was no significance difference of Constant-Murley score and postoperative neck shaft angle between two groups(P＞005). There were no significant differences in the flexion, extension, abduction, adduction, external rotation and internal rotation between two groups after treatment(P＞005). There was no significant difference in the incidence of complications between the two groups(P＞005).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗The efficacy of closed reduction intramedullary nailing is obvious as the same efficacy as locking plate fixation in elderly patients with humeral surgical neck fractures, with minimal invasion, less bleeding, shorter operative time and faster fracture healing.

Key words: humeral fractures, fracture fixation, intramedullary, aged