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Abstract Objective To compare the short-term clinical effects of proximal femoral cannulated screw locking plate compressed by cannulated compression screw and cannulated screws in treating young adults with femoral neck fractures.Methods The clinical data of 56 cases with femoral neck fracture treated in our hospital from January 2013 to January 2015 were analyzed retrospectively.The patients were divided into two groups(group A and B)based on the different fixation method.Of them，30 cases(group A，18 males and 12 females)were treated with proximal femoral cannulated screw locking plate compressed by cannulated compression screw and 26 cases(group B，15 males and 11 females)with three compressed canulated screws.Operative time，intraoperative blood loss，healing time of fracture，incidence of non union and femoral head necrosis，incidence of failure fixation，joint function (Harris score)were compared between two groups，and statistical analysis was performed.Results All 56 patients were followed up from 18 to 30 months with an average of 24 months.There was no significant differences in incidence of non union and femoral head necrosis between two groups(P＞0.05).Operative time of group A (94.70±4.96)min was more than that of group B (67.30±5.65)min (P＜0.05).Intraoperative blood loss of group A (144.27±26.42)mL was more than that of group B (77.73±7.86)mL (P＜0.05).Healing time of fracture of group A (11.33±1.09)months was less than that of group B(13.19±1.27)months (P＜0.05).In group A，there were no internal fixation failure cases；and in group B，screw retreating occurred in 3 cases，screw cutout from the femoral head occurred in 2 cases；there was significant differences between the two groups(P＜0.05).Joint function (Harris score) of group A (80.87±2.55) was higher than that of group B(79.30±2.96) (P＜0.05).Conclusion Proximal femoral cannulated screw locking plate compressed by cannulated compression screw has advantages of reliable fixation in treatment of femoral neck fractures.Compared with the traditional three compressed canulated screws，proximal femoral cannulated screw locking plate compressed by cannulated compression screw has less healing time and fixation failure rate and higher hip function scoring.But this operation mode is more complicated，the operation time is prolonged and the amount of Intraoperative blood loss is increased.
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