How To Treat Pain And Swelling In The Knee And Ankle Of An Elderly Female?

My wife, Ms. Pkmklvmdani is 59 years old, weight 60 kg. has swelling on both of her knees and ankle. She has a slight pain in her knees. She was seen by a orthopedic surgeon, who has opined that it is due to weakening of bones. She had been prescribed the following medicines:
Ranitidine 150 mg
Bignac SR
Gemfos 35 mg
Shelcal 500 mg

She had taken the above medicines for a month but she does'nt fine any relief. She is also a patient of hypertension, for which she has been taking medication separately.
I would like to seek medical advice for her swelling and jammed knees.