What kind of long term studies have they done regarding harvesting your own hamstring tendons? (I know they have done these as many ACLs are now done with autologous hamstring tendons....
In a biomechanics class, we had a guest lecturer who works with a group of surgeons who have tried every type of ACL reconstruction over the last few decades. I asked him the same question about taking the semitendinosis and semimembranosus tendons...essentially, they don't really know, but people lose about 10% of their knee flexion strength.