New Study Questions Effectiveness Of Knee Replacement Surgery | NBC Nightly News

New research from Mount Sinai Health System says these surgeries have limited effectiveness and can be economically unjustifiable when they're done on patients with less severe symptoms.
» Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC
» Watch more NBC video: http://bit.ly/MoreNBCNews

NBC News is a leading source of global news and information. Here you will find clips from NBC Nightly News, Meet The Press, and original digital videos. Subscribe to our channel for news stories, technology, politics, health, entertainment, science, business, and exclusive NBC investigations.

Connect with NBC News Online!
Visit NBCNews.Com: http://nbcnews.to/ReadNBC
Find NBC News on Facebook: http://nbcnews.to/LikeNBC
Follow NBC News on Twitter: http://nbcnews.to/FollowNBC
Follow NBC News on Google+: http://nbcnews.to/PlusNBC
Follow NBC News on Instagram: http://nbcnews.to/InstaNBC
Follow NBC News on Pinterest: http://nbcnews.to/PinNBC

New Study Questions Effectiveness Of Knee Replacement Surgery | NBC Nightly News