How do I know if I have bad knees?
user
One common symptom is that it’s painful to walk.  I have some reading suggestions for you, about why this happens and what you can do about it.  Would you like me to share these with you?
assistant
How do I know if I have bad knees?
user
Knees are hinged joint on the end of each leg. They work together to bend and straighten your legs, and to push off from the ground when you walk, run or jump.
assistant
How do I know if I have bad knees?