Lynne, lots of folks bring in a footrest to go under the desk. It can be as nice as an ottoman and as simply as a box. That allows you to sit with a straight leg--and you can ice at the same time.
I have worked too--I was a curator in a museum. ONe of those jobs where there were no funds for a decent salary
and enough work for four people.
At first, I worked non stop--and then, one day, I thought Wait, what am I doing? So, 12-1 became mine. I would not attend meetings during that time and I would not book an appt either. Every day I grabbed my lunch and walked for an hour. I love being outside and that time was so refreshing to me--just to breathe and relax a little. My boss thought I was crazy at first and I did get some flack. But, I noticed that he began taking a lunch no matter what too.
So, try to find a spot--close your door or go to a Christian Science reading room where you can lie on the floor and put your foot up. A gym would be perfect. Even 30 or 40 min of having your foot up will help a lot.
Also, I wore thigh hi support stocking when I went back to work. I got them on line at discount surgical stockings. I got black ones with no feet in them which are really pretty comfortable. They really helped control the swelling. I worked in a store after my last tka and the stocking saved the day for me. Kelly