Knees are tricky. Like a lot of things, you don#39;t really realize how much they do for you—until they stop working properly. And anyone who#39;s ever had knee pain or a knee injury knows just how debilitating they can be. The key to recovery from and prevention of knee injuries is strengthening the muscles around the knee to relieve...

Knees are tricky. Like a lot of things, you don#39;t really realize how much they do for you—until they stop working properly. And anyone who#39;s ever had knee pain or a knee injury knows just how debilitating they can be. The key to recovery from and prevention of knee injuries is strengthening the muscles around the knee to relieve...

Original article and pictures take https://livestrong.com site