Sherriequilts - please don't ruin your knee surgery by rushing back to save your fabrics. I am a procrastinator and many of my fabrics have been in cheap plastic bags for >5 years in a hot attic. I am gradually buying clear plastic sweater boxes at our local container store [$5/box, so as my budget permits] and transferring fabrics that go with a specific planned quilt into these boxes with the picture or pattern of the quilt. So far all my fabrics have been like new - no sun damage and no brown spots and no mold.
So-focus on your rehab and physical therapy so that you can be restored to good health and restart your quilting.
Sincerely - Judy M.D.