Hi Ruth,sorry just saw your post,can tell you what I've experienced
I had partial right knee surgery in 2004,the knee start to bother me last yr,had xrays taken I have condtion{can't remember medical term} where calcium crystals get in between the cartiledge makes the knee stiff&sore,can't sit for long periods of time.When it really bothers me,I ice it take Aleve at night.I still do the exercises my therapist gave me 16 yrs every morning when I get out of bed.It limbers up the knee before I take my 1st walk of the day
Last Nov I was diagnosed with osterarthritis in my left knee.My dr's NP told me I'd probably have to have surgery in 2 yrs.I had trouble then walking up/down stairs,really stiff &sore.I went to physical therapy in Jan-March a couple times/wk,my therapist really helped me.I still do the exercises he gave me every day,the knee feels alot better.I walk up/down the stairs almost every day.It hasn't stopped me for going on my daily walks.I don't use a knee brace ,once in awhile I use the heating pad only my left knee. Sue