Alongside living longer, we are demanding more from life. The desire to remain active right through old age drives us to find new ways to repair damaged joints. However, many injuries are beyond the body's natural ability to heal, requiring surgery to restore normal function. For many athletes, such as those competing in this month's Olympics in Rio, injuries can have serious effects on their careers, leading to a break in, or retirement from, competition. There is a growing need for long-lasting repair of the skeletal system, using cells and tissues to aid the body's own healing processes. Work on engineering replacements for damaged tissues is the focus of many research projects at the Institute of Medical and Biological Engineering in the University of Leeds.

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