BackgroundA majority of femoral neck fractures are indicated for surgical treatment within the scope of applicable guidelines. However, the reported overall complication rate in elderly patients one year after hip fracture fixation was 33.3%. The purpose of this study was to clarify the incidence of complications one year after femoral neck fracture fixation using a sliding hip screw with a side plate device in elder than 65-year-old patients.MethodsWe studied the results of 115 cases of the

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... ernal fixation for femoral neck fractures in patients older than 65 years of age using the Twins device (HOYA Technosurgical Corporation, Tokyo, Japan). We could follow up 39 of these 115 cases at one year after fixation and retrospectively investigated complications in these patients. Research outcomes were mortality, surgical site infection (SSI), loss of reduction, aseptic necrosis, late segmental collapse (LSC), nonunion, periprosthetic fracture, reoperation, and recovery of walking ability.ResultsThe patients consisted of 13 men and 26 women (mean age 80.5 years, range 65-104 years). Mortality was observed in four cases (14.2%), SSI in one case (2.5%), loss of reduction in six cases (15.4%), aseptic necrosis in seven cases (17.9%), LSC in three cases (7.6%), nonunion in eight cases (20.5%), periprosthetic fracture in three cases (7.6%), and reoperation was performed in seven cases (17.9%), respectively. In 28 cases, the patients could walk independently before injury; this decreased to 19 cases after injury (67.9%).ConclusionsIn our study, the incidence of loss of reduction rate and periprosthetic fracture rate were relatively high. Other complications of the Twins device evaluated were equivalent to those reported previously.