Objective: The aim of this study was to compare the clinical and functional outcomes of patients treated with partial hip prosthesis (PHP) or double lag screw proximal femoral nailing (PFN) for unstable femoral intertrochanteric region fractures. Material and method: In this study, the data of 101 patients who developed grade 3-4-5 femoral intertrochanteric fractures according to the Evans-Jensen classification between 2019–2020 and were treated with cemented PHP or double screw PFN were evaluated retrospectively. The patients were evaluated in terms of postoperative follow-up time, age, gender, trauma side, American Anesthesia Society Anesthesia Risk Scale (ASA), number of comorbid diseases, total hospitalization time, amount of intraoperative bleeding, duration of surgery, and postoperative complications. Results: 101 patients evaluated within the scope of the study were divided into groups of 51 patients who underwent PHP (Group 1) and 50 patients who underwent PFN (Group 2). When the results were compared in terms of mean length of hospital stay, duration of surgery, amount of intraoperative bleeding, and postoperative 1-year mortality, the results were found to be statistically significant. Conclusion: Our study results showed that the PFN method has clinical advantages over PHP. The PFN technique is a method that can be applied quickly and safely.