A radical new treatment could bring relief to millions of back pain sufferers, scientists said today. A team at the University of Manchester has developed a stem cell cure that could totally regenerate damaged tissues. Low back pain affects up to 80 per cent of the population at some point, and in many cases becomes persistent, eventually leading to debilitating pain. It is usually caused by the degeneration of the tissue between the discs in the back, which becomes dry and no longer able to support the body. Current treatments rely on strong painkillers or risky surgery, and aim to...