Between June 1985 and February 1990, We treated fifty-one tibial shaft fractures using intramedullary Ender's nails at department of orthpaedic surgery, National Medical center. The results were as follows; 1. Most common causes of fracture were traffic and falling down accidents. 2. Forty-four cases out of 51 were closed fractures and remaining 7 cases were open fractures. 6 cases of the open fractures were Gustilo type I and II, one case was type III. 3. The interval from injury to operation was mostly within 2 weeks and mean duration of permission to full weight bearing was 10.1 weeks. 4. The duration of mean radiological bone union was 17.3 weeks and no cases of nonunion occurred. 5. Four cases of complications was noted such as nail migration, superficial infection, delayed union, and ankle stiffness respectively. 6. In conclusion, Intramedullary Ender nailing is one of good treatment modalities which provides low risk of complications and allows early weight bearing and ambulation. This method can be peformed in troublesome fracture patterns such as open fracture, segmental fracture, where other procedures may not be suitable and in pediatric unstable fractures.