Elastic nail procedure When selecting the insertion point, the insertion point is generally 1-2cm away from the epiphyseal plate of the distal femur. Surgical incisions were made, one longitudinal incision was made at each side of the needle entry point. The pulp is opened, and the bone cone is used to slowly enter through the incisions on both sides until it crosses the bone cortex. Insert the elastic intramedullary nail, install the preadjusted bending intramedullary nail on the wrench, and slowly insert the first intramedullary nail through the incision; The second elastic nail was inserted in the same way. Then rotate or tap gently to gradually push the two intramedullary nails inward. Confirm the position of the intramedullary nail, confirm the top position of the intramedullary nail with the help of imaging, and then continue to push in a few centimeters until the preset position is reached; Then screw a screw cap into the end of the intramedullary nail, or cut off the excess intramedullary nail. After placement, the incision is closed to complete the surgery.