Tom Huckaby,
Hogan's injuries were mostly bone injuries.
Pelvis, collar bone, ankle and rib.
Bones knit and heal rather well, sometimes becoming stronger.
I'm not diminishing the severity of Hogan's injuries, only pointing out that they were bone, not joint injuries with the possible exception of his ankle.
Hogan's injury occured almost a year and a half prior to the Open at Merion.
Tiger's most recent surgery, amongst previous surgeries, was less than two months before the start of this year's Open. In addition, he sustained a double stress fracture of his Tibia while rehabing his knee.
I've broken my leg, ankle, wrist, every toe and several fingers, all from sports and Karate, and all after the age of 30. They all healed quite well with a little time, although my wrist will never return to normal function.
I'd rather break bones than have a torn ACL.
Recovery from broken bones is duck soup.
Full recovery from a torn ACL may never happen.
Venturi's 1964 episode was also amazing.
He too was told to quit, but, he didn't and the Open Trophy has his name etchted in to it for all time.
I believe that Tiger's conditioning is the equal of any golfer whose ever played, including Stranahan.