The gold standard for treating infections after artificial knee replacement is to have a second-stage replacement. At this point, many patients are concerned about the difficulty of such an operation. How do I choose a new artificial joint prosthesis? What are the results after surgery? Today we will talk about the problems associated with second-stage artificial knee replacement. Is it difficult to perform a second-stage replacement? It is undeniably more difficult to perform a second-stage replacement than an initial artificial knee replacement. This is because the normal soft tissue structures and bones in the body may be damaged or lost after a primary surgery, making it difficult to perform a second stage replacement. Is second-stage replacement a minimally invasive treatment? As the concept of minimally invasive surgery has become more popular, it is now a must to talk about minimally invasive surgery. However, whether it is an artificial knee replacement, debridement after an infection, or a new joint prosthesis in Phase II, all require surgical incision and cannot be treated minimally invasively using an arthroscope. This is especially true if the arthroscope is used for minimally invasive treatment: on the one hand, the arthroscope is not as thorough as open surgery in the examination of the intra-articular lesion, which may result in a poorly cleaned joint; on the other hand, the arthroscope cannot replace the polyethylene liner, let alone a new joint prosthesis. How do I choose a joint prosthesis for second stage replacement? Joint prostheses are divided into initial replacement prostheses and second stage revision prostheses. The second-stage revision prosthesis is more functional than the initial one, so it is used for the second-stage revision. What are the results of a second-stage replacement prosthesis? After the failure of the first artificial knee replacement, the function of the knee joint is rebuilt with a second replacement. So, can the knee function after the second reconstruction be the same as a normal person? After the second reconstruction of the knee joint combined with post-operative rehabilitation exercises, the function of the knee joint can be gradually restored to a level close to that of a normal person, with no limitations in daily life, and can walk normally, go up and down stairs, etc.