
Arthritis Isn’t Just ‘Wear and Tear’ On Aging Joints
When I walk up steps these days, my left knee crunches. It’s a bit disconcerting. If I hike too far or sit in the wrong position for too long, my knee swells and aches. I have osteoarthritis in that knee, but I can’t write it off as part of the normal aging process.Osteoarthritis has long been thought to be caused by repetitive mechanical stress on our joints as we age. The prevailing theory has been that the cushioning cartilage in our joints breaks down by daily microtrauma, until eventually w...