Common types of displacement of femoral stem fractures: 1. In the upper segment, the proximal end, under sharp pull, is displaced forward, outward, flexion, external rotation, and abduction; the distal end, under pull of the adductor muscle and pull of the biceps femoris, is displaced backward and inward; 2. In the middle segment, the proximal and distal ends are displaced inward at an angle at the same time; 3. In the lower segment, the distal end, due to pull of the gastrocnemius muscle It is easy to damage the sciatic nerve and damage the femoral artery; the proximal end may be displaced inward and backward, which may damage the femoral artery and femoral vein, and may damage the sciatic nerve.