The shaky science of the Q-collar, exercise for osteoarthritis, and patient choice.

This week on the podcast The BMJ investigates Q-COLLAR, an American device that distributors claim can reduce brain injury from contact sports. Investigators James Smoliga and Mu Yang take us through the evidence, and former NFL punter turned US bobsled team member Johnny Townsend explains what this means for sportspeople. Bin Wang from Zhejiang University School of Medicine explains what the new network metaanalysis finds is the best exercise options for knee osteoarthritis And, what our patient panel really think about “patient choice”.   links How an FDA cleared “brain protection” device built on shaky science made it to the NFL Comparative efficacy and safety of exercise modalities in knee osteoarthritis The BMJ's patient and public partnership