Proximal femur fractures are rare pediatric injuries associated with high energy trauma as well as polytrauma. Injuries during childhood can cause a significant disability in some cases. The four Delbet classifications of femur fractures are frequently used as prognostic for potential avascular necrosis. Necessary treatment is urgent and needs to be tailored to the fracture type and patient age. This case report presents the detailed history, examination, and treatment of a six-year-old girl with an uncommon site of pediatric fracture at the femoral neck combined with an ipselateral displaced talus fracture due to a fall from the second floor. Talus fracture was missed and discovered in operation room; however, both fractures are highly associated with avascular necrosis and post-traumatic arthritis. The patient was followed for two years on regular basis after the initial operation with a normal gait, full range of motion, and no active complain.