Abstract:

Objective To explore the clinical efficacy of femoral neck system（FNS）and cannulated compression screw（CCS）in the treatment of Pauwels type Ⅲ femoral neck fracture. Methods The clinical data on 52 patients with Pauwels type Ⅲ femoral neck fracture admitted to the Department of Orthopedics and Trauma of the People′s Hospital of Xinjiang Uygur Autonomous Region from January 2020 to June 2021 were retrospectively analyzed. According to different internal fixation modes，they were divided into two groups：FNS group（26 patients）， CCS group（26 patients）. The surgical duration，intraoperative blood loss，incision size，figure of X⁃ray fluorosco⁃ py，and time to fracture healing were compared between the two groups. The quality of fracture reduction was assessed by Garden alignment index. The degrees of femoral neck shortening and neck angle loss and rates of femoral head necrosis and fracture nonunion were followed up one year after the procedures. Harris score was used to evaluate the degree of hip function recovery one year after operation. Results There was no significant difference in preoperative general data between the two groups（P > 0.05），which was comparable. The intraoperative figure of fluoroscopy，time to fracture healing，degree of femoral neck shortening，degree of neck angle loss，and Harris score on hip joint one year after surgery were significantly better in FNS group than in CCS group，and intraopera⁃ tive blood loss in CCS group was less than that in FNS group（P < 0.05）. There were no significant differences in postoperative Garden alignment index and rates of femoral head necrosis and fracture nonunion between the two groups（P > 0.05）. Conclusions FNS has a positive short ⁃term clinical efficacy in the treatment of Pauwels Ⅲ type femoral neck fracture. The figure of intraoperative fluoroscopy，degrees of postoperative femoral neck shortening and neck shaft angle loss，and Harris score on hip joint are better than those in the CCS group，which can be used as a preferred scheme for Pauwels type Ⅲ femoral neck fracture.

Key words:

femoral neck fracture, internal fracture fixation, cannulated compression screw, femo? ral neck system