Shoes -- A Problem

For some reason, back in November, my knees have gotten considerably worse with arthritis.  Bad enough to send me to an orthopedic surgeon where I was given a cortisone shot and told to exercise my knees.  I am a candidate for knee replacement surgery sometime in the future but not now -- and if you ask me, not ever.

I am pretty sure I have arthritis in all my joints but because I am heavier than I should be I think it is hitting my lower, weight bearing joints the worst.  My left ankle is giving me a lot of trouble right now.  I have had three severe sprains in it and now that I seem to be giving to my knee a great deal it is acting up as well.

I am a structural hot mess.

So, I am noticing that one pair of shoes that I wear frequently is making things worse for my knees and my ankle.  This is them --

They are very easy to slip on and off and they look nice on my feet but there is absolutely no support and I guess they have stretched a bit because my feet slide all over in them making my ankle and knee wobble.  Mostly my ankle.

I have a pair of Clark's flats that work fairly well -- they are so old I can't find a photo of them!

I have a pair of Grasshopper ortho-lites that feel ok but with my high arches I don't do well in lace up shoes but it seems that if I am not in the ones pictured above, I am in those.

The problem is that I think all of my shoes are making my foot issues worse.

I am thinking of trying Tom's.  I need something I can just slip on.  I am afraid I inherited my father's feet and he couldn't wear lace -ups either. 

Suggestions anybody?