Mumbai (Maharashtra) [India], March 4: Arthritis is a condition that many people face as they age, often bringing with it pain, stiffness, and difficulty in moving. For some, it might just be a dull ache in the knees when climbing stairs, while for others, it can mean struggling to walk or even stand. The knees, which bear much of our body's weight, are particularly vulnerable to the effects of arthritis. While knee replacement surgery has become a lifeline for many, there are ways to prevent arthritis from worsening and exciting new medical advances that make surgeries safer and more effective.