yeah it starts with my knees too, either they lock up and i fall forward or they just melt (no other way to explain it ) and so do my legs and down i go. I too have had total reconstruction surgery on my ankle, plate pins screws, even new ligaments, I dont lead with that foot ever, which is kind of funny cause the leg i lead with is the one with the bad knee, cant win for losing

not to sidetrack things too much sorry,

I hope things get better for you sheena