Evaluation of Risk Factors for Revision Surgery After Proximal Femoral Nailing for Intertrochanteric Fractures

<i>Background and Objectives:</i> Intertrochanteric femur fractures are very common, especially in the elderly population, and cause serious morbidity and mortality. Today, the most commonly used implants in the treatment of these fractures are proximal femoral nails (PFNs). This study aimed to analyze the clinical and radiological results of patients who underwent surgical treatment with a proximal femoral nail (PFN) for intertrochanteric femur fractures and later required revision surgery for various reasons. <i>Materials and Methods:</i> Patients who underwent surgical treatment PFN due to intertrochanteric femur fractures between 2022 and 2025 were included in the study, and the patients were divided into revision and non-revision groups. Demographic information, postoperative radiological measurements, complications, and reasons for revision surgery were noted, and risk factors leading to revision were determined using bivariate and multivariate analyses. <i>Results:</i> A total of 207 patients, 97 revision (46.9%) and 110 non-revision (53.1%), were included in this study. Cut-out was identified as the most common revision cause (<i>n</i> = 52, 53.6%), followed by loss of reduction (<i>n</i> = 15, 15.5%), implant failure (<i>n</i> = 14, 14.4%), nonunion (<i>n</i> = 6, 6.2%), infection (<i>n</i> = 4, 4.1%), cut-through (<i>n</i> = 3, 3.1%), and avascular necrosis of the femoral head (<i>n</i> = 3, 3.1%). When bivariate analysis was performed to identify risk factors for revision, it was observed that female gender (<i>p</i> = 0.004), presence of posteromedial comminution (<i>p</i> < 0.001), operation under spinal anesthesia (<i>p</i> = 0.023), surgery in supine position (<i>p</i> < 0.001), using closed reduction techniques (<i>p</i> < 0.001), presence of infection (<i>p</i> = 0.004), and higher Charlson comorbidity index values (<i>p</i> < 0.001) increased the risk of revision. Additionally, positive and neutral medial cortex support (<i>p</i> < 0.001) decreased the risk of revision. Multivariate analysis was also applied to the parameters found to be significant in bivariate analysis. As a result of this analysis, surgery in the supine position (<i>p</i> < 0.001), using closed reduction techniques (<i>p</i> < 0.001), and higher Charlson comorbidity index values (<i>p</i> < 0.001) remained significant. <i>Conclusions:</i> Careful evaluation of the fracture morphology, ensuring optimal reduction, and considering the accompanying comorbidities of the patients in the surgical planning of unstable trochanteric fractures stand out as key elements in increasing surgical success.