Background and Objectives: The management of femoral shaft fractures in pediatric age has always been a subject of discussion. In this study, we are ascertaining the functional outcomes following the use of Titanium Elastic Nails for diaphyseal femoral fractures in children.  Material and Methods: This prospective observational study was performed on 23 patients of age 5 to 15 years with diaphyseal femur fracture who were operated and fixed with intramedullary TENS in the Department of Orthopedics, BP Koirala Institute of Health and Sciences from May 2020 to April 2021. Patients were evaluated to ascertain the functional outcomes of titanium elastic nail fixation in diaphyseal fracture of femur in pediatric age group using Flynn’s scoring criteria.  Result: All 23 patients were evaluated for a period of 6 months. Radiological union in all cases were attained in a mean time of 14.61 weeks. Average duration of hospital stay was 4.3 days. Limb length discrepancy and malalignment were notable in none of the cases. The results were excellent in 21 patients (91.3%), satisfactory in 2 (8.7%) and poor in zero patient(0%) at 6 month period.  Conclusion: Based on these results, TENS is a safe, mini-invasive, reliable, rapid and efficacious method for the management of diaphyseal femur fractures in children.