Minimally Invasive Total Hip phy is highlighted, but rather a compilation of expertise and Knee Replacement has been assembled for the reader to evaluate. Within the text of this book, many issues will be presented, Change is inevitable, but progress does not necessarily some of which are incision length, single versus multiple follow. We are currently witnessing two dramatic incision, muscle sparing versus muscle splitting, in situ changes within the world of total hip and knee replace­ bone cuts versus dislocation of the joint, and intra­ medullary versus extra-medullary instrumentation. As ment. Minimally invasive surgical techniques have been popularized in the media and on the web and the effect long as the judgement of time has not provided a single has been to focus an increased interest in the preserva­ best solution the issue, there is a place for a variety of tion and handling of the soft tissues during hip and knee techniques, approaches, and opinions. Therefore, the replacement. Computer-assisted hip and knee replace­ editors invited those experts to contribute whose names ment surgery has developed to the point where it can be are already associated with minimally invasive total seamlessly integrated into the operating room. Together joint surgery, and who are well known for their high lev­ these two changes - minimally invasive surgery and el of competence in the field.