I've been struggling with recurrent right knee "injuries", pain and occasional swelling for the past couple of years. The last straw came last week after the swelling in my right knee refused to subside completely even after 3-4 weeks. I couldn't even walk or stand without feeling any pain. After an x-ray and consultation, I've been diagnosed with Tricompartmental Osteoarthritis with osteophytes. I'm told that it is a severe form of degeneration. I'm 41 this year. I'll likely seek further opinion and advice on this. In the meantime, does anybody know how this will impact my weekly dosage of badminton? ie can I still play? Or should I completely quit from the sport? Anybody else also suffer from this?