former depuy rep here.. I was around before the attune launch and the years after full push for sigma to attune conversions. Initially almost every surgeon had fantastic feedback, than 18 months out it happened. Even the most meticulous surgeons who actually gave a shit about outcomes were noticing tibias jumping out with no fixation. The joint recon cowboys that did 8 cases a day chalked it up to an acceptable outcome, but the artists that did 1-2 a day and cared were in disbelief. I witnessed firsthand that we were told to blame their cement technique, than switch from our cement to pala and change up viscosity... This was all done to buy time to secure deals for jumping ship and bringing as much business as possible... From the get go it was known what the problem was... Nail in the coffin was the song and dance trips to warsaw for facility tours, it was openly talked about in joking terms by the local pencil pushers and engineers regarding the eventually recall and lawsuit. Worst secret ever.
Don't let anyone fool you, this was strategized and calculated before the system was rolled out. This is just an acceptable risk they decided they could take. It will only get worse.