A 5-year-old boy was caught in a landslide and sustained injuries including with severe floating knee fracture and Hawkins Type I talus neck fracture. Other fractures were subtrochanteric part of the femur, tibia, fibula, and ankle dislocation fracture. Distal diaphisis of the tibia showed Gustilo Type III a open fracture, for which we performed operative treatment. Other fractures including the talus were treated conservatively. The injured leg was fixed with a long hip spica casting for eight weeks. After eight weeks, Hawkins sign was seen in the talus and considerable callus formations at each fracture site. We started weight bearing. Twelve weeks after the accident, all fracture sites healed, and 16 months after the accident, he had no limited range of motion in his hip, knee, and ankle. He also had no motion pain at each joint. X-ray pictures showed complete union and no avascular necrosis of the talus.