Bilateral TKR'S 7 wks ago with severe numbness on both sides of both knees - outer sides worse than inner. I feel so tight and constricted when I bend them to walk up stairs. Also having dull ache in outer side of right foot ...does not respond to pain med. Miserable. I have been scanned for DVT..negative. And...one more thing...weird... My right lower back/flank is also persistently aching. (Yep uti ruled out). Any one else with any similar experiences? Thx