The term "reconstruction" commonly refers to ACL, with some tissue damage. So, your use of the term "reconstruction" is very vague, and gives zero information on what the damage actually was, and what was fixed.
Sorry,I'm not a doctor and wasn't trying to provide a medical diagnosis.
All I know is that when I talked his mom she made it a point to say it wasn't an ACL.
She said it was the third time he needed a "complete reconstruction".
She also said that when they first used the cadaver parts they didn't "take" (her word) and they had to go back in to redo some of the work.
Don't know if it means anything,but after the third "repair" he wasn't allowed to fly for at least a couple of months.