A patient asked about the difficulty and worst outcome of having a second surgery or revision surgery after fifteen or twenty years of service life after having a hip replacement, and my friend said that the second surgery or revision surgery is quite difficult. If they fail, they will spend the rest of their lives in a wheelchair. There are two issues here: One is that the need for a second revision after 15-20 years is wrong, this is based on the premise of using polyethylene lining, now polyethylene is used less and less, I basically do not use it anymore, if you use metal to metal or ceramic to ceramic may be used for life, so revision is not inevitable. The second is that although revision surgery is difficult compared to initial replacement, 85% of revisions are not very difficult, and in addition this difficulty is relative and understood differently by doctors with different experiences. There are also particularly difficult revisions often because the polyethylene wear particles cause too much osteolysis, resulting in severe bone defects, so the culprit is still polyethylene, so as long as polyethylene liners are not used there will not be as many problems.