Clinical application of femoral neck system and cannulated screws in the treatment of displaced femoral neck fractures in young and middle-aged patients
Objective To investigate the clinical effectiveness of femoral neck system(FNS)and cannulated screws in the treatment of displaced femoral neck fractures in young and middle-aged patients.Methods From January 2021 to January 2022,60 patients with displaced femoral neck fractures who met the selection criteria were selected and random-ly divided into two groups(group A and group B,with 30 cases in each group).There were 37 males and 23 females.The age ranged from 28 to 58 years(mean,43 years).The fracture types were classified according to Garden classifica-tion:12 cases of type Ⅱ,28 cases of type Ⅲ,and 20 cases of type Ⅳ.Patients in group A were treated with femoral neck system(FNS)internal fixation,and patients in group B were treated with cannulated screw internal fixation.The operation time,the amount of bleeding from the incision,and intraoperative fluoroscopy times were recorded.The quali-ty of fracture reduction was evaluated by Garden index.The fracture healing,time,and femoral neck shortening were re-corded during follow-up.The clinical efficacy and Harris hip score were compared between the two groups.Results According to Garden index,all the 60 patients were satisfied with fracture reduction.The operation time of group A was(41.8±8.2)min;The operation time of group B was(41.1±10.6)min,there was no significant differ-ence in the comparison of intraoperative operation time(P＞0.05).The intraoperative blood loss in group A was(76.0±12.6)mL,which was more than that in group B(35.5±12.6)mL.However,the number of intraoperative flu-oroscopy in group A(16.4±3.4)was less than that in group B(35.7±6.7),and the differences were statistically significant(P＜0.05);There was no significant difference in the comparison of the number of days of hospitalization and the time of fracture healing at follow-up between the two groups(P＞0.05);The femoral neck shortening was 3.0(1.5,3.3)vs.3.5(1.5,4.0)mm in the two groups,which was statistically meaningless(P＞0.05).No femoral head necrosis occurred at the last follow-up.According to Harris scoring system,the hip function of group A was excel-lent in 19 cases,good in 8 cases,and fair in 3 cases,with an excellent and good rate of 90.0％.According to Harris score system,the hip function of group B was excellent in 16 cases,good in 10 cases,and fair in 4 cases,with an ex-cellent and good rate of 86.7％.The two groups of patients had good recovery of hip joint function,and the difference in scores was not statistically significant(P＞0.05).Conclusion The advantages of femoral neck system(FNS)and cannulated screw internal fixation are similar,but,FNS can effectively reduce the hospitalization time and fracture heal-ing time,and achieve ideal hip function recovery after operation,which can obtain satisfactory short-term results.
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