I Have Osterarthritis And Many Peo That Having Knew Surgery

I have osterarthritis and many peo that having knew surgery will help me walk better. I also have
blood clots in knee which my doctor is treating now thru medication. My doctor suggested to me that
I just have a knee cleaning, or something new where they circulate blood from my body into my knees.have been with him ove 30 years, and I am a young 70 yrs old at 200 lbs. I have lost 48lbs, and still trying to lose.
Can you please give me sound advice and some direction in what to do. Thank you. Dianna and Phil