I went into my surgery expecting to follow the the 90 degree restrictions and surprisingly I had no restrictions. My OS uses only the posterior approach which initially led me to believe I'd have to follow precautions. I loosely followed them on my own anyway "just because". I felt what was good for one, must be for another, lol. It seems more docs are steering away from them but because your situation is more complicated it may be required. You'll know when the time is right. Things will just begin to fall into place. Best wishes, Mersada. Stay in touch.