If we concentrated on the really important stuff in life, there'd be a shortage of fishing poles"
When you play football, you gotta like the taste of blood, And 50 percent of the time, it's your blood.
It is characteristic of the unlearned that they are forever proposing something which is old, and because it has recently come to their own attention, supposing it to be new.
"The best way to get the right answer on the internet is not to ask a question; it's to post the wrong answer."
Doesn't matter if they use rhino tendon. It stretches well slowly, not quickly when tons of force is applied. Bigger faster people apply more force with dynamic movements ie cuts. I know if no way and no research that shows changing this. Connective tissue is what it is.
The young in this country do not know enough to be prudent,
and therefore they attempt the impossible - and achieve it generation after generation - Pearl S. Buck
Maybe on non-athletes this is what they are using. Allografts (tissue from a cadaver) have way higher re-tear rates no matter what tendon it came from. Because of this, a high percentage of athletes and their surgeons choose to use an autograft (tissue from the athlete). Most choose a BPTB (bone-patellar tendon-bone) graft. They choose this because the bone plugs on each end of the graft anchor in much more securely and heal better. A common secondary option is a hamstring graft. But what do I know, I have only studied athletic training for 4 years, hot shot.