I think truly moving/shifting market share by an ortho company takes a major event. Remember J Nicholas's comment he made on the tee box in front of a bunch of reporters about his hip squeaking? That sent Stryker who was #1 in hips to lose mkt share. It also gave Depuy an opportunity to go against ceramics w metal, and shift mkt share in their direction. Fast forward to today, and Stryker is nipping at Depuy's heals (virtually statistically even), because of shift away from metal.
Look at the knee market. Who's #1? Zimmer. Everyone thought when Z bought out all their consulting agreements they would lose market share, however it didn't happen. DePuy has lost steam bc lack of any real innovation. They kept "putting lipstick on a pig" when Z and Stryker, and even S&N were launching something to appeal to the market. The only thing that has kept them close are their stable of consultants (engh, Dennis, ranawat, etc).
At local levels, shifting market share could actually be controlled more by the hospitals Supply Chain than we all may want to admit. We are losing price daily. So how will companies try to maintain a position in a hospital? Volume controls price. The hospital doesn't give a shit if your xlink poly is called AOX, X3, Verilast. They also don't care about how many Narrow sizes you may have, or if your femur is black. Does it work? How much is it?
I don't think it's all doom and gloom, but saying a "new" product is a gonna be a game changer, really think about that statement.