The operation steps of heel traction are as follows: 1, disinfection before operation: first, let the patient lie in prone position on the bed, to put the affected limb on the Tomas frame, to pad the heel bone, and then thoroughly disinfect and spread the sheet in the heel bone area. 2, select the point to enter the needle: choose the medial side of the heel bone and enter the needle, enter the needle in the center of the connection point between the tip of the inner ankle and the heel tuberosity, manually enter the needle to stick the needle to the bone, so as to avoid the ankle tube 3.Deepen the needle into the heel bone: after affixing the needle into the bone, it should be perpendicular to the tibial tuberosity, and the needle should be gradually driven into the heel bone with a hammer until it penetrates from the lateral wall of the heel bone. 4.Traction: make the length of both sides of the needle equal, and then connect the traction arch and heavy hammer, and generally use 5kg bone traction.