A prospective study to analyze the functional outcome of the femoral neck system in femoral neck fractures

Abstract Background: In 2017, a new fixation device called the femoral neck system (FNS), manufactured by DePuy Synthes orthopedics company of Johnson & Johnson, was introduced to manage femoral neck fractures. The primary objective of this study was to present our firsthand experience with this device in treating femoral neck fractures and to evaluate its clinical outcomes. Materials and Methods: With ethical committee approval, we conducted a prospective study involving patients aged 18 years or older but no more than 60 years. The study included a final sample size of 30 participants, selected based on specific inclusion and exclusion criteria. Patient records were reviewed to collect data on blood loss, fracture type, internal fixation methods, and the duration of clinical follow-up. Continuous variables were analyzed, and their mean values, standard deviations, and ranges were reported. The clinical assessment of patients was carried out using the Harris hip score and postoperative X-rays at regular intervals. Results: In our study, the gender distribution among the patients showed that 60% were females and 40% were males. The patient’s average age was 44.12 years, with a standard deviation of 2 years. The functional outcomes of patients treated with FNS using the hospital for special surgery (HSS) method were compared at different postoperative time points: 6 weeks, 3 months, and 12 months. The statistical analysis revealed significant differences in functional outcomes at these time intervals. During the study, two cases of postoperative complications were observed among the patients. These complications were addressed through specific interventions, namely bipolar hemiarthroplasty and shoe raise to correct limb shortening. Conclusion: Our study demonstrated that FNS yielded positive outcomes, significantly improving the HSS scores. Additionally, we observed that FNS was associated with minimal intraoperative blood loss in the cases we examined.