Stay up to date on orthopedic physical therapy research in 4-8 minutes. In this episode, we review an article that discusses the use of orthopedic special tests, and how their reliability may change in the presence of the derangement classification within the McKenzie method of Mechanical Diagnosis and Therapy. Listen to the podcast, check on the show notes and download the associated .pdf files at mskresearchbrief.com, and join us in discussion on Facebook. PMID: 29059632 #mskresearchbrief@msk_rbThanks for listening!Michael Post, PT, DPT, Dip. MDT, FAAOMPTSupport the show (https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=MJ9A7QYTE53LJ&source=url)