After an artificial knee replacement, many patients feel a “creak” in the joint when they move a little. So, why does this ringing occur? What are the effects? In fact, the “creaking” after artificial knee replacement is now analyzed to be related to the mechanical device of the replacement joint. During the surgery, the surgeon will make the two sides of the artificial knee joint close together in order to ensure the patient’s recovery after surgery. However, because the artificial joints are mechanical and stiff, they will rattle when they come into contact. In addition, the tissue scars around the knee prosthesis are still in the hardening stage after surgery, and when moving around, the hardened scars and the metal prosthesis create friction and can also rattle. This is a normal part of the “break-in period” and will gradually disappear three months after surgery as long as the correct functional exercises are adhered to. However, it is worth noting that not all joint ringing is normal. If the joint ringing is too loud or lasts too long, you need to seek medical attention. Generally speaking, we need to analyze the size of the ringing, the frequency of occurrence and whether it is accompanied by pain, and then consider taking the appropriate measures: 1, if the patient only feels the ringing in the joint, but others cannot hear it, it may only be a small change in the mechanical joint, which will not bring any impact, let alone affect the life of the joint; 2, if the ringing is so loud that others can hear it, or three months or even 3, if the joint sounds and accompanied by pain, it means that the position of the prosthesis is not particularly suitable, then you need to carefully check to find out the cause, because the location of the prosthesis is not suitable, it is likely to affect the service life of the joint. It is worth emphasizing that the joint rattles and is accompanied by pain, please promptly ask the surgeon to review.