IMPORTANT!! THERE ARE TWO REPLACEMENT KNEE TYPES!!
I had my left knee replaced in 2006, 2008, and 2010, by
3(THREE) different surgeons.
Rehab for me wasn't bad. I have a freakishly high pain
threshold.
I promptly loosened BOTH of the first two, by simply being
very active (Teaching college refrig/HVAC courses).
I go to 3rd surgeon. He tells me there are two designs.
My first two were plate and ball glued to bones.
He installed a knee that drilled into bones a couple of inches,
made of "Porous Stainless Steel" that grew to the bone
Rehab was a bear 'cause first two made the
bones soft.
BE CERTAIN THAT YOU GET THE LAST KIND THAT ACTUALLY
ANCHORS TO THE BONES IF YOU ARE ACTIVE!!