INTRODUCTION: The most typical long bone fractures are those of the tibia and fibula shaft. More than 45 both bone leg fractures occur annually in the average population for every one lakh people. There is a wide range of injury mechanism and severity associated with tibial fractures. Between the ages of 20 and 40, young males have the highest incidence of adult both bone leg fractures. Nonunion and malunion are more common in tibial fractures than they are in other body fractures. The most common fracture site in the tibia is the tibial diaphysis, and approximately 80% of these injuries are linked to fibular fractures. Different treatment choices are accessible for tibial shaft fractures depending upon the related delicate tissue injury. The long-term outcomes of severe open tibial fractures are inversely correlated with the prevalence of complications. It typically affects young patients and is brought on by high-energy trauma. For adults with displaced and undisplaced tibial shaft fractures, intramedullary nail fixation is still the preferred surgical option. AIM OF THE STUDY: The aim is to study the clinical, radiological and functional outcome and complication for tibial shaft fractures treated with intramedullary nailing through suprapatellar approach in semi extended position of knee at VINAYAKA MISSION'S MEDICAL COLLEGE AND HOSPITAL, KARAIKAL, during the period of SEPTEMBER 2020 to JUNE 2022