If I do wear shoes, sneakers (some type of footwear) have I then cut myself off from ~chi~ (sic. direct physical contact with the chi in the ground)? Is there any kind of consensus on this issue from the Internal Martial Community? Is there a Japanese/Chinese difference in this particular issue... ?

The second issue... what do practitioners say re: artificial parts, (reconstruction; vertabrae, bones, perhaps muscle) metal plates, screws, bolts, etc. If I needed reconstruction with a vertabrae, needed a rod, pins, etc., had reconstructive surgery of some kind...what does that mean in terms of preventing/enhansing the "normal" correct flow of chi long term?

Are people who required such surgical proceedures severely inhibited in some manner by traditional thinking in terms of their chi flow?