Femoral stem fracture is one of the more common fractures in children, and the current treatment methods mainly include conservative treatment, such as traction and plaster fixation, which have the disadvantages of long treatment time, difficult care, and more fracture deformity healing; traditional incision and repositioning splints or intramedullary nail fixation, which have the disadvantages of large trauma, destruction of epiphysis, and many complications. However, with the introduction of flexible intramedullary nailing in the 1980s, the treatment concept of femoral stem fractures in children has changed considerably, both internationally and domestically, i.e., there is a growing trend toward minimally invasive surgical treatment. The advantages of minimally invasive surgery are: 1. Small trauma: minimally invasive technique, small incision (only 0.5-1.0 cm), small injury, small scar, less bleeding, and low risk of infection; 2. Short hospitalization period, low cost, reduce the economic burden of patients.