If you have an ache in your knee, can you self-diagnose or should you go to the doctor?
If you are over the age of 55 and your knee:
• Feels stiff and achy in the morning, gets better after you start moving around, but then hurts if you try going for too long a walk OR
• Gets tight and stiff when sitting for a prolonged period of time and hurts the most when going up and down stair
And if these symptoms have come on gradually as opposed to an acute traumatic event, then you probably have...

