I'm wondering about the the utility of crashbars. My S isn't fitted with it, but the "police" versions of the DS are. And it is possible to fit the bars aftersales.
The questions is, in case of a crash, do the bars merely prevent the fairings from being scratched or do they also save the rider's legs?
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Could a crashbar have helped reducing the impact on the leg?
Sorry for your situation.
Hope you heal quick & proper.
I can't say If the bars would have prevented or lessened your injuries.
What I can share with you is the spill that happened to me about 2.5 weeks ago on my 2016 DSR fitted with crash bars.
I was in a dedicated right hand turn transition lane (radiused/sweeper not a squared hard intersection right) when I suddenly went down.
It all happened so fast I'm not sure what caused the spill.
I could have hit a patch of oil or perhaps a section of road (marking) paint.
Not sure I was or wasn't using the front brake.
I have dualsport tires so that may have contributed to the instant loss of traction.
I estimate that I hit the tarmac at 20 mph or so.
At first glance the only damage on the bike was a scratched right crash bar & a small but deep scratch on the lower rear corner of my right side pannier.
As to my gear, I wear a Aerostich Roadcrafter one piece suit
https://www.google.com/search?q=Aerostich+Roadcrafter+one+piece&client=safari&hl=en-us&prmd=sivn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjvlbTyw-nYAhUO9GMKHauXAGQQ_AUIEigC&biw=1024&bih=672It had a few small road rash bites on the right hip/pant access flap.
(I've since ordered a kevlar riding suit made by Motoport that should hold up to road rash MUCH better)
http://www.motoport.com/product/ultra-trek-stretch-suit/My Held gloves have what they call Super Fabric
https://goo.gl/images/AsgFkz on the palms & my right glove now has some slightly lower/flatter beads in the palm.
That was the extent of the damage.
Just two points of contact for both bike & body.
I can't say with certainty that the bars made a difference in outcome in my situation, but I'm extremely grateful they were available & I decided to purchase/install them.
I don't like the looks of them, but their not too ugly on a DS.
On second/in depth inspection of the bike, I found that the right side main bolt that holds the crash bars to the top frame mount had bent/stretched & its bottom mount had rocked at the aluminum skid plate that it attaches too (the mount footprint had bent in at the back/pushed out at the front).
I had to do a bit of old-school body work to sort it all out.
I did not fill in (weld) the missing grind wound as I didn't want to deal with refinishing the powder coating.
I just masked off the bar & hit it with some rattle can primer/paint.
I was surprised by how much metal was ground out of the top section of the slanted (/) section of the bar.
(Note: I'm not 100% sure that the right frame mount did not get bent &/or frame receive damage. Will assess next time I remove the plastic (Electronic signal relay up-grade).
I suggest to all that you should consider increasing your conspicuousness to help get you be noticed by others.
I wear a (once/when newer) hi-vis suit & helmet.
I put amber LED lights on the forks down low for a triangular light pattern (Note: I replaced the incandescent headlight with an LED so as to not tax the somewhat anemic electrical system).
Ultimitly I will add more LED's for even grater conspicuousness.
Also cars KILL!!!!
Stay as far away from them as you can.
Expect that they will not see you & ride accordingly.