Predatory Journals Threaten the Quality of Published Medical Research.

Ever since scholarly open-access publishing started to gain a foothold over a decade ago, many hundreds of open-access journals and publishers have emerged around the world, including many journals that are dependent exclusively on payments from authors to meet their expenses. The purpose of this Viewpoint is to describe the negative aspects of predatory publishing and how the behaviors of such publishers erode the principles of the peer-review system. J Orthop Sports Phys Ther 2017;47(1):3-5. doi:10.2519/jospt.2017.0601.