Again, a few points:
1. Successful Outcome is defined differently as far as medical literature is concerned. It doesn’t mean, for spinal fusion surgery, one can play football, it simply means the surgery had an outcome as expected and was a success, at least as far as the short term. This also doesn’t mean one will not lose flexibility and range of motion because of the surgery being a ‘success’.
2. Minimally invasive refers to the cut, meaning it lessens healing time. A smaller cut means less chance for doing more damage, which require Ls longer healing times. The bigger the cut, the larger the inflammatory response, which can create more issues on u to a surrounding tissues. It doesn’t mean the procedure itself changes. The fusion surgery with bone, still impacts the biomechanics the same way, because the disk is replaced by bone.
3. The newer procedure is a disk is not fused with bone, but an artificial disk. Peyton Manning had his bone fused, so this is still standard operating procedure. The point is, the only way a procedure can truly change is of one can substitute the removed disk with a like substance.
This is what the whole premise of stem cells is about. Use cells to produce like organs in a specific environment and then introduce them into the body hoping the latter accepts it.