ACL reconstruction is usually about over a year of rehab. It is very invasive, because the doctor uses the center 1/3 of the patellar tendon or harvests two strands of hamstring from below the knee. Then there's the drilling a hole from the lower leg into the femur, screws to hold the graft in place. It's a great time.

Don't push the rehab too hard. Make sure you ice a lot, because you're going to have swelling. Discomfort is OK, pain is not.