BB, NE Baptist Hospital in Boston is tops in this field for this area. Unfortunately I know that doesn't help you much as you're a lot further south so not very practical. I just had a temporary fix on one knee done there recently and will be doing the full replacements on both probably in the next year or two at the most from what they told me.
Yes, bad knees do make us fat, old, and grumpy. I suffer from all of those and more.
