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You mean torsion and compression at the same time? Because compression on its own doesn't ruin joints afaik (it was long claimed it did).

Both at the same time, long term compression wears down the nodules (the stuff covering the bones to prevent bone on bone contact in joints) so.

Source: My Orthodontist after looking at my right knee (nodules) and left one (ligaments and torsion / compression at the same time)

Edit: Orthopedist, not dentist! What was I thinking!

I'm curious why your orthodontist was looking at your knees in the first place...

Back when I had one of those -dontists, my knees were still good!

> "the stuff covering the bones to prevent bone on bone contact in joints"

that's a meniscus, and coats the articulating surfaces (called condyles). synovial fluid in the joint capsule acts as a lubricant for the menisci.

a nodule is a lump.