Comparison of therapeutic effect of cannulated compression screws and femoral neck dynamic cross screws in treatment for adult femoral neck fractures
[Objective]To compare the efficacy of femoral neck dynamic cross screws and cannulated compression screws in adult patients with femoral neck fractures.[Methods]Clinical data of 62 hospitalized adult patients with femoral neck fractures from January 2019 to January 2022 were analyzed.The patients were divided into cannulated compression screw(CCS)group(31 cases)and femoral neck dynamic cross screw system(FNS)group(31 cases)according to fixation methods.Blood loss during operation,operation duration,femoral neck length change,time of partial and complete weight bearing after operation,offset change,incidence of postoperative adverse reactions,Harris score of hip function at 1 year after operation were compared between the two groups.[Results]FNS group was significantly better than CCS group in time of partial and complete weight bearing after operation(2.4±0.2 weeks vs.6.2±0.3 weeks,6.6±0.2 weeks vs.10.6±0.3 weeks)(P<0.05).The femoral neck shortening length in FNS group[3.8(3.3,4.3)mm]was shorter than that in CCS group[3.8(3.6,6.3)mm](P<0.05).The change of eccentricity in FNS group was 0.6(0.4,0.7)cm,which was significantly less than that in CCS group[0.9(0.8,1.5)cm](P<0.05).Harris score of 93(92,93)in FNS group was significantly higher than that of 86(84,90)in CCS group(P<0.05).The incidence of postoperative adverse reactions in FNS group was 3.2%(1/31),which was significantly lower than that in CCS group[25.8%(8/31)].There were no significant differences in blood loss during operation and operation duration between the two groups(P>0.05).[Conclusion]In this study,FNS reduced offset variation and postoperative adverse events,allowed early postoperative weight-bearing,and helped maintain femoral neck length and hip function,especially in unstable femoral neck fractures.