Introduction: The most frequent fracture of a long bone is a tibial shaft fracture. The aim of therapy for a shaft tibial fracture is to maintain the length of the initial fracture, accomplish union, and restore both axial and rotational alignment. Fractures of the proximal and distal 1/3rd of the tibia's shaft have higher rates of malunion. The preferred method of managing diaphyseal fractures of the lower limb, however, is intramedullary (IM) nailing. Aim: To evaluate the functional and radiological outcomes of IM nail supplemented with Poller screws for proximal and distal 1/3rd shaft tibial fractures. Materials and Methods: From May 2020 to November 2021, a prospective, interventional study was carried out at thecollege name. The study included a total of 30 fracture patients between the ages of 18 and 60. For the treatment of the proximal and distal 1/3rd shaft tibial fractures in all participants, IM nails were additionally combined with Poller screws. Ten instances had open fractures (grade I or II according to Gustilo Anderson's complex tibia fracture classification), while twenty cases had closed fractures. Patients were checked on at three weeks, then every six weeks till union. KarlströmOlerud's functional evaluation standards were used to assess patients.The IBM Statistical Package for the Social Sciences (SPSS) software version 23.0 was used to statistically evaluate the data. Results: In this study, there were 20 (33.3%) females and 40 (66.7%) males, indicating a male predominance. It was found that 40% of the patients were between the ages of 41 and 50. The patients' median age was 34.12 ±5.9 years. According to KARLSTRMOLERUD'S FUNCTIONAL EVALUATION, 36 patients (n=60) in the current study had excellent outcomes, followed by 16 (26.7%) patients who had good outcomes, and 4 (6.7%) patients who had both satisfactory and moderate outcomes. Postoperative complications included shortening of the leg, of which two patients experienced a 0.5 cm shortening, four patients experienced a 10° loss in ankle dorsiflexion, three patients experienced a loss of knee flexion (two patients experienced a loss of 20° flexion and one patient experienced a loss of 15° flexion), six patients experienced a loss of subtalar movement (two patients experienced a 10° inversion loss, three patients experienced a 5° inversion loss, and one patient.