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Static Plane - Ankle Flexion - Boot Help

post #1 of 7
Thread Starter 

Hey Guys, 


Hoping to get a gut check here. 


My wife has been complaining a lot about heel lift in her Dalbello Krypton Kryzma I.D. ski boots. 

I took her into a reputable boot fitter today. He shell fitted her current boots and then measured her ankle flexion. He said that her ankle plane was fairly static. Its not that she can't flex it, but it has limited range. 


He then said, I imagine you try to lean forward in your boot, but you feel like your heel is lifting and that you are going to fall forward, so you end up skiing backseat, and everybody yells at you to stay forward and you just can't. That pretty much sums up my wife's skiing to a T. 


When I first met her she was skiing in a traditional 4 buckle Salomon boot. She then switched to the dalbello and her skiing ability went downhill (no pun intended). I figured it was her move from Park City to Snowbird and that she needed to get more comfortable on steeper terrain. As I watched her more and more I realized she wasn't keeping her weight forward enough, I also noticed her ankle flexes much less than mine. I figured it was a woman problem. 


He said that there is one way to fix it, with a two pronged approach. 


Prong 1: Put her in the most upright boot possible. He recommended Lange. He said that because her ankle has limited movement it is necessary to put her in an upright boot so that she isn't already leaning forward before she begins to engage the front of her boot. Currently her boot is maximizing her ankles forward flex before she can even try to engage the boot. Thus, her heel lifts even with the slightest engagement. 


Prong 2: Put her in a really stiff boot. He recommended a 120-130 flex Lange. He said that once she is upright its important to make sure she never flexes through the boot all the way, lets give her something really stiff to lean into. He said that her athletic build and strong legs make him believe that the 130 would be a better flex. 

He then told us that he won't recommend a specific boot until he spends about 1 hour with her collecting foot / leg data, but that was a great starting point. 


Not ready to spend $800+ when I walked into the shop (I figured we'd be buying orthotics and going on our way) I told him I'd go look into scrounging up some cash and I'd be back. I mean that, if he is a good boot fitter, I'm wiling to spend money with him. 

However, I'd like a gut check here first. Does his reasoning sound correct to you? I was impressed that he could tell she had problems staying forward after just 3 minutes with her, but I am also hesitant to put my intermediate - advanced skier wife into a 130 flex race boot. 


Please chime in, let me know your thoughts. I really appreciate it.

post #2 of 7
Thread Starter 

By the way. I was wrong. The boot is the Krypton Storm, not the Kryzma. 

post #3 of 7

all sounds about right.    


You can always make a boot softer, if needed, later.   But you can't make a soft boot stiffer

post #4 of 7
Thread Starter 
We got a second opinion from a more reputable boot fitter.

He told us that she actually has about 17-19 degrees of flexion on her ankle.

My understanding is that average is around 25 degrees?

He said the real problem is that her boot is a size too big.

He said she absolutely needs the most upright boot possible. He recommended K2 spyre and Lange RS series, but said both of these may need to be stood up even more.

He also recommended a 110 flex for her.

He said that an overlap boot would be better than 3 piece, so that she never flexes past her ROM.

He also said she needs a narrow heel pocket, but a 100mm forefoot.

Are there any boots I'm missing? What boots have a 7-8 degree forward lean (net of ramp angle), narrow heel pocket, medium forefoot width. I want to make sure we try on everything that may work for her.
post #5 of 7
Thread Starter 

Does anyone know the forward lean and ramp angle of the Rossignol alltrack or allspeed lines of boots, I'd like to know before trying them on 

post #6 of 7
Average range of motion when sitting 90-90-90 is 11-17 degrees. 25 degrees would be very hyper mobile.

17-19 would be slightly more than average so some your second opinion advice is valid. You do need to avoid a "fitter" that thinks all women need a heel lift. Just something to be aware of..

The test is sit in a chair, where your tib-fib is 90degrees from the ground. Your femurs are parallel to the ground and your back is 90 degrees from the floor.

Then have the person lift their fore foot off the ground as far as they can. (No help) and measure the angle from the ground.

While I am a fitter, I don't work at a shop and see all the different offerings year to year so I will leave those fit recommendations to the other fitters. Just wanted to clarify your question about ramp and ROM.. You do need to take into account the ramp angle developed by the bindings and if you have short feet/small boots, don't forget the percentage of ramp will increase since the space between the toe and heel is shorter.
post #7 of 7
BTW, if the forward lean is not quite upright enough but the fit is good, any good fitter should be able to make a lot of the balance/lean/cant adjustments.

Don't let the uprightness of a boot rule out the boot or boot line.

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