Body movement as a biomarker for use in chronic pain rehabilitation: An embedded analysis of an RCT of a virtual reality solution for adults with chronic pain
Sammeli Liikkanen, Mika Mäkinen, Teppo Huttunen, Toni Sarapohja, Carina Stenfors, Christopher Eccleston
Pain cannot be seen directly, but the way a person moves may leave a useful trace. This study asks whether moving faster during virtual-reality rehabilitation can signal that chronic back pain is improving. What if recovery from chronic pain could be tracked not only by asking how someone feels, but by measuring how their body moves in virtual reality? This study finds a promising movement signal, but also shows why it is not yet a finished biomarker.