Hello, Thanks for your query. ** From your history I have come to the point that your mother must get x-ray both knees standing in AP view and send me the report so that I can grade her osteoarthritis and act accordingly. Till then give her balanced diet. She should not be given fatty and carbohydrate rich diet, junk foods, cream etc so that her weight can be under control. Try to avoid squatting and upstairs as much as she can. Do quadriceps strengthening exercises in morning and evening as up loaded on you tube. This will straighten her muscles around knee and pain will decrease. She must wear hinged knee brace when ever she want to walk or go out for some work. I do hope that you have found something helpful and I will be glad to answer any further query. Take care