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Objective: To compare the frequency of a good functional outcome in unstable per-trochanteric fractures fixed with a dynamic hip screw and proximal femoral nail using the Harris Hip Score.  Methodology: A comparative study was conducted at the Department of Orthopaedic Surgery, Pakistan Institute of Medical Sciences, Islamabad, from June to December 2021. A total of 80 patients with per-trochanteric femur fractures were selected and divided into two groups based on the surgical procedure performed: dynamic hip screw or proximal femoral nail. A comprehensive history and thorough examination were performed for all patients during scheduled follow-up visits. Patients were called in for follow-up assessments at 1 month and 3 months to evaluate the functional outcomes using the Harris Hip Score. Results: The mean age of all patients was 58.73±6.78 years. At the 3-month follow-up, the mean Harris Hip Score was significantly higher in the proximal femoral nail group compared to the dynamic hip screw group (84.64±7.05 vs. 73.9±12.53; p = 0.005). The proportion of patients with good functional outcomes (Harris Hip Score ≥ 70 points) was significantly higher in the proximal femoral nail group compared to the dynamic hip screw group (97.5% vs. 72.5%, p = 0.002). Conclusion: In this study, the proximal femoral nail group demonstrated superior functional outcomes compared to the dynamic hip screw group. The use of proximal femoral nail fixation can provide better outcomes and facilitate an earlier return to pre-injury status for patients.