Is it too late for me to get in on this? I'm an ortho also, specializing in only the upper extremity, so I have a lot of experience with this injury. I presume that the tendon was torn at the elbow, which requires surgery for almost everyone. If it is at the shoulder, you should NOT be having surgery. Fixbone is right pretty much about everything he's said: Don't worry about viral transmission, porcine or other grafts should
never be used for an acute biceps tear, triceps tears are very, very unusual and rare and worse than biceps tears, his outline of 4 weeks light and 12 weeks full recovery are right on.
I would address your other concerns about the weightroom by saying that all or nearly all of my patients have had a 100% recovery (we never know since sometimes patients don't follow up at 6 months or beyond - but we guess that is because those patients have recovered fully), with normal strength in the operated arm. I prefer the 2 - incision technique over the 1 - incision, because nerve damage is known to be less likely. Still, the risk of permanent neve damage is miniscule. The fact that your surgeon mentioned it makes me think he is qualified and experienced at this procedure. If there is a "deadspace" just above your elbow, then there is no doubt that this is a full, complete tear and requires surgery for the best outcome. Without surgery, you'd lose approximately 40-60% of your flexion (bending, curling) strength, and 50-70% of your supination (turning the palm upward) strength.
About your surgeon's qualifications, I would HIGHLY recommend searching
www.aaos.org and clicking "Find and Orthopedist" on the left column. If your doc comes up, then that means he/she is a member, and highly qualified. You may also check
www.assh.org and click "Find a Hand Surgeon" at the top right. This will tell you if he/she is in the hand society, which indicates a high degree of specialization and extra training/testing in hand. Most hand surgeons who are orthopedists (some are plastics) do alot of biceps tendon surgery.
Hope it helps, and good luck with your recovery.