You have to wait until April? I suppose that's not all that long a wait; you've been down for a while, so what's a little longer right? Hope it's repairable.
It'll be Spring in full swing when you get out. Time to go sit outdoors in the garden and soak up the Sun and all She has to offer! (use SunBlock and a hat though

. I bet the warmer the sunshine gets, the better your knee will feel!! Hiding never helped me any, just made it worse when I did get out in the World. Not letting that Negativity get hold of me any longer.