jamiche, your reading is correct. I'm not a doctor, but many refer to an ACL autograft (using your own patellar tendon) as "the gold standard". Part of why it gains this title is because tendons have superior kinetic properties and this surgery provides a new ACL that has bone on both ends of the tendon from day 1. On the down side, obtaining bone on both ends from your own body means it's a bit more invasive than using cadaver parts. When an ACL autograft is harvested from a patient's own patellar tendon a piece of bone is taken from the face of the patella at the top of the patellar tendon, a strip is cut from the center of the patellar tendon, and at the bottom of the patellar tendon a piece of bone is taken from the attachment point at the tibia. In particular, the patella is rather sensitive after this procedure and doing things like kneeling or falling on the face of the patella aren't possible without pain or damaging the patella for several months afterward. Don't believe me, read about Jerry Rice's ACL autograft - he came back too fast and
broke his patella.
I think Parker's decision to sit a year is brilliant. I made the mistake of returning to playing soccer 5 months after my ACL autograft surgery and immediately tore it again. Really, about a year post-surgery is when a competitive athlete might want to start playing at a high level again and I'd say 2 years out you feel like you're back to your normal self (or pretty close to it) - before then, the swelling prevents the knee from reacting and working as it did pre-injury. I've also done the tibialis anterior graft (from a cadaver), which IMO has a faster recovery period (maybe as fast as 6 months), but I'd be really surprised if the U of M's team physicians/surgeons offered a cadaver graft over an ACL autograft. My point: different types of ACL surgeries have different recovery times.