My mother tells me she is having shoulder replacement surgery due to arthritis and pain In her shoulder. She is 83 years old, small frail lady (100 pounds) with osteoporosis. Is someone like this a good candidate? She has an 89 year old husband in poor health who she does a lot for. She seems to think she ll be back to normal activities in a few weeks but after reading the article here, she does not sound like a good candidate. What is realistic recovery for someone like this? Otherwise she still drives and perform light chores around the house, but not by any means is she active. She mainly sits. Thank you.