Possibly. It can help prevent it, but it can also cause it if not performed properly. Yoga is great for improving flexibility and core strengthening. However if you are severely deconditioned and starting yoga, it's advisable you take it easy in the beginning and have a good instructor, to minimize your risk for injury.
Yoga. Yoga can help prevent and treat many muscle, tendon, ligament and joint conditions if used in the right way. Like any tool it can be used properly to help or improperly to cause damage. See the recent nyt article on the potential harm if used improperly. So make sure you have a teacher that understands how to strike the right balance and let them know if you have any medical issues.