@checkracer honestly I don't keep track of injuries, so no real statistics from me But I have seen report from someone in medical team or something like this at Swiss ski team (I don't remember his exact and official position inside of Swiss team) stating number of knee injuries decreased significantly with new skis. Now if that is valid thing or not, I don't know, but I certainly hope he was operating with real data and not speculations. Either way, I would say it's too short period to have some real statistics out of this, as it can be just few good years with less injuries, or maybe it could really be changed skis have something to do with this.
One more thing with your list... You are listing all knee injuries, which is not really fair At leasts Razzoli, Marsaglia, Thalmann and Noens didn't injury their knees on GS skis. With Hector it wasn't really ski, as it would happen on any kind of ski, and if I remember right, also Fenninger's crash was slip on inside ski in knee injury was result of aftermath of crash (not 100% sure now if this was really so or not, as that's straight of my (bad) memory ).
@ScotsSkier honestly I can't say for sure. Personally I would say it didn't change much, as basically it really can't considering rules didn't change. Tracks are still same as they were, at least all traditional venues are exactly like they were, no changes in terrain or altitude of start/finish line. I don't remember a single of traditional courses that would get any facelift in last few years, which means they are as wide as they were 5 or 6 years ago, they are as long and as steep as they were. Considering rules about number of gates and min distance didn't change, it's quite hard to imagine there could be some drastic changes with settings, as pretty much everyone are complaining you need to set course really offset if you even want to succeed putting required number of gates to course. This means most of courses are still set to 20-25m max. What I would say it's changing a bit is preparation which is lately a bit less brutal icy then it was few years ago. But it could also be just weather as last few seasons winters over here are pretty weird, which also shows on chances for track preparation.
One more thing with your list... You are listing all knee injuries, which is not really fair At leasts Razzoli, Marsaglia, Thalmann and Noens didn't injury their knees on GS skis. With Hector it wasn't really ski, as it would happen on any kind of ski, and if I remember right, also Fenninger's crash was slip on inside ski in knee injury was result of aftermath of crash (not 100% sure now if this was really so or not, as that's straight of my (bad) memory ).
@ScotsSkier honestly I can't say for sure. Personally I would say it didn't change much, as basically it really can't considering rules didn't change. Tracks are still same as they were, at least all traditional venues are exactly like they were, no changes in terrain or altitude of start/finish line. I don't remember a single of traditional courses that would get any facelift in last few years, which means they are as wide as they were 5 or 6 years ago, they are as long and as steep as they were. Considering rules about number of gates and min distance didn't change, it's quite hard to imagine there could be some drastic changes with settings, as pretty much everyone are complaining you need to set course really offset if you even want to succeed putting required number of gates to course. This means most of courses are still set to 20-25m max. What I would say it's changing a bit is preparation which is lately a bit less brutal icy then it was few years ago. But it could also be just weather as last few seasons winters over here are pretty weird, which also shows on chances for track preparation.