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A new multidisciplinary study opens an exciting non-invasive therapeutic avenue for healing muscle injuries in elderly patients. Using a robotic mechanotherapy device on aged muscle, the researchers found that the same treatment that helps young muscle heal faster after injury actually has the opposite effect with aging — it exacerbated the injury. After pinpointing mechanotherapy-induced differences in immunity between young and old muscles, they showed that anti-inflammatory therapy enabled mechanotherapy to achieve healing effects in aged muscles.