Revision hip replacement is a procedure that is performed in order to repair an artificial hip joint. Sometimes, artificial hip joints are damaged over time as a result of wear and tear or infection. Occasionally instability or dislocation can also require a revision hip replacement. The surgery helps to repair the damage, allowing for proper function to be restored. During the procedure, the damaged artificial hip joint is removed and replaced with a new one. In some cases, more than one procedure may be required, in which case old scar tissue is removed during the first surgery, so that infection can be treated. When the infection has cleared, a second surgery can be performed and a new prosthetic hip joint can be placed.