Introduction: The treatment of subtrochanteric fractures has evolved over a period of time, from conservative to extramedullary fixation to intramedullary fixation. The management of these fractures poses a significant challenge, the criteria for functional recovery becoming more and more exacting. Aim of study: To assess union rates and functional status after long PFN in subtrochanteric fractures. Material __ampersandsignamp; Methods: A prospective study on adult patients with a follow up of 6 months was conducted at Orthopaedic department of Govt. Medical College Hospital, Jammu between June 2014 and May 2016. 40 patients above the age of 18 years with subtrochanteric fractures were included in the study. Patients were assessed clinically and radiologically on the 2nd postoperative day, at 4 weeks, 12 weeks and then between 6 months to 1 year depending upon the fracture union. At each follow up, functional evaluation of the patient was done. Results: Majority of fractures(72.5%) united within 14 weeks.Full weight bearing was allowed by 12th week in majority (57.5%) of cases.Salwati __ampersandsignamp; Wilson hip function score improved from 16 at discharge to 36 at 6 month follow up. As per Kyle__ampersandsignrsquo;s criteria, results achieved were Excellent/Good in 95% of cases. Conclusion: Proximal femoral nail is an efficient device for the treatment of subtrochanteric fractures with high rate of bony union. The great majority of patients were provided with stable fixation, early mobilization, early rehabilitation and return to pre-fracture status.