For many years now the medical community has been performing surgery to repair joints and replace damaged tissue. When a hip operation is performed, for example, a titanium joint is usually created and integrated with the bone. In other areas of the body, sometimes tissue can be grafted. Sometimes, even cadaver material is used. Scientists at the University of Michigan and elsewhere are studying new approaches that will likely change the ways in which we approach treating these kinds of injuries. Tissue replacement operations could soon become more of a science and less of an art. David Clements, producer of the “Be Connected” Series on Technology, has more.