HI, thanks for using healthcare magicOsteoarthritis
can be associated with significant pain and disability
. Exercises that strengthen the muscles surrounding the knee would help stabilise the joint and may reduce pain.
Your doctors may be concerned that exercising up and down the stairs may cause further damage. In general low impact exercises are preferred.
You can ask your doctor for a referral to a exercise therapist or physiotherapist to get an idea of the appropriate exercises.
I hope this helps