Bone traction is used for the following fractures: 1. thigh fractures, such as femoral stem fractures, supracondylar fractures, intertrochanteric fractures, femoral neck fractures, can be used with supracondylar traction or tibial tuberosity traction, or intercondylar traction. 2. lower leg fractures, such as tibiofibular stem fractures, can be used with heel traction. 3. upper extremity fractures, upper arm fractures such as humeral stem fractures, humeral surgical neck fractures. 4. cranial traction, for patients with cervical spine fracture dislocation, can be used, usually to prevent fracture overlap displacement, angular displacement, etc.