Osteoarthritis Pain: What You “Kneed” to Know September 24, 2019 | Health Benefits | Like |Yes, osteoarthritis is a common cause of knee stiffness and pain, especially in people over 50.No, arthritic knees don’t have to keep you from doing the things you enjoy!Knee pain often creates a vicious cycle: It hurts, so you don’t want to move. › You avoid exercise.