hi surya,
your mother is an ideal case for knee replacement surgery. Do it from a respectable doctor as well as a good institute.If she undergoes proper physiotherapy, she will have real good lifestyle. There are plenty of good institutes in cochin,calicut,angamali,trivandrum,kottayam.
regards
DO ask us more
surya321
total knee replacement is great i had it done in March of this year on my right knee.. it is very safe. if you need want to know more from somebody who's had it done please feel free to ask me anything.. good luck..