An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Ropponen A, Levälahti E, Videman T, Kaprio J, Battié MC.Ropponen A, et al. Among authors: levalahti e.Phys Ther. 2004 Jul;84(7):608-21.Phys Ther. 2004.PMID: 15225080Clinical Trial.
Battié MC, Videman T, Levälahti E, Gill K, Kaprio J.Battié MC, et al. Among authors: levalahti e.Spine (Phila Pa 1976). 2008 Dec 1;33(25):2801-8. doi: 10.1097/BRS.0b013e31818043b7.Spine (Phila Pa 1976). 2008.PMID: 19050586