The stump fracture is a type of heel fracture, and the heel fracture is the most common of all tarsal fractures, occurring easily in middle-aged men. Stump fracture: It is a longitudinal (oblique) fracture that affects the talar dice and heel talar joint. It is more common in adults and is often caused by a fall from a height or a crush injury. It is often accompanied by vertebral fractures, pelvic fractures, head, chest and abdominal injuries, and should not be missed during the initial consultation. Achilles fracture is the most common of all tarsal fractures, accounting for about 60% of all tarsal fractures. Most of them are caused by vertical impact on the heel after falling from a high place and landing on the foot. What are the causes of stump fractures? Heel fractures are more common in adults and are often caused by falls from height or crush injuries. It is often associated with vertebral fractures, pelvic fractures, head, chest, and abdominal injuries, and should not be missed during the initial consultation. The heel bone is a cancellous bone with a rich blood circulation supply, so bone discontinuity is rare. However, if the fracture line enters the articular surface or is poorly repositioned, post-traumatic arthritis and pain when bearing weight on the heel bone are common. Subtrochanteric fracture A subtrochanteric fracture is a fracture of the femur from the lesser trochanter to the junction of the middle and proximal femoral stem. It is the fracture between the narrowest part of the bone marrow cavity. The incidence accounts for 10% to 34% of hip fractures. There are 2 groups of age distribution, 20-40 years old and 60 years old and above. Fractures in the older group are mostly caused by low-energy trauma, while fractures in the younger group are mostly caused by high-energy injuries, often combined with other fractures and injuries. The mortality rate of subtrochanteric femoral fractures varies among authors, ranging from 8.3% to 20.9%. Due to the physiological stress distribution characteristics of the subtrochanteric femur, surgical treatment has a high rate of fracture non-union and internal fixation failure. After the fracture occurs, the femoral stem undergoes shortening, external rotation deformity and abduction and posterior tilt of the femoral head neck under the pull of the muscles, so as to restore the internal retraction, shortening, external rotation of the femoral stem and abduction and posterior tilt and external rotation of the femoral head neck, and restore the internal retraction muscle of the hip joint The aim of the treatment is to correct the inversion, shortening, external rotation of the femoral stem and abduction and posterior tilt and external rotation of the femoral head neck, and to restore the tension of the hip joint adductor muscles so as to restore the function of the limb. Therefore, the understanding of the biomechanical characteristics of the subtrochanical area of the femur, the analysis of fracture types, and the application and indications of various types of internal fixation will directly affect the treatment results. Fracture of the ankle joint Fractures of the ankle (fracture of the ankle joint) are more common and are more likely to occur in daily life or on the sports field. According to some statistics, ankle fractures plus ankle ligament injuries account for 4% to 5% of total body injuries. Most ankle fractures are caused by indirect violence, such as valgus, inversion or external rotation. Different types and degrees of fractures are produced depending on the size, direction and position of the foot at the time of injury. The ankle joint is a weight-bearing joint and all fractures are intra-articular. If the alignment is not good, traumatic ankle arthritis will form, and the injured ankle will be stiff and painful, making walking difficult and painful. In addition, most of these injuries are combined injuries of bone and ligament, so the fracture and ligament injury should be treated with the same high priority.