The document outlines four approaches to the femur - lateral, antromedial, antrolateral, and posterior. It provides details on the uses of each approach. The lateral approach is used for ORIF of intertrochanteric and subcapital fractures, osteotomies, femoral shaft fractures, and hip arthrodesis. The antromedial approach is used for trochanteric or subtrochanteric fractures, requiring internal rotation of the leg. The antrolateral approach is best for distal femoral fractures and extending into the knee joint. The posterior approach is used for supracondylar fractures, intramedullary rod placement, and treating femoral nonunion.