In below figures:
I have poly surfaces representing the major vessels in the legs(denoted in blue and red). I have spatially manipulated the leg bones which are all individual meshes to bend 60 degrees (top leg) and then 150 degrees (about the knee) via script. I was wondering is there is any way to bend or flow these poly surfaces along the bone while maintaining their integrity. The rhino file link is below if you want to get a more comprehensive look.