Shorter ADRs Less Facet Joint Stress????

[Michelle Maree]

Hi,
Just pondering out loud here..........Why arent there ADRs with shorter disc heights?
Why do they have to restore disc height to normal?
I mean if a person has had a reduced disc height for a couple of years and so the facet joints have degenerated accordingly ,it seems to make sense to me that the facet joints would have trouble adjusting to this new height and range of movement. And if they made shorter discs then the range of movement might better match the facet joints and not stress them out as much. Just a thought.
Does anyone know which ADR is the smallest out of all the brands?