X A-frame

Slalom, work on technique in the season 2016. A-frame

A-frame stance, knock knees, X shaped legs – different names of non parallel shins (tibia from the knee to ski) during ski turn. At course X make difficult to move more down the body, limits edge angle and looks at modern standards not aesthetically. In my opinion, if X is, it can not be cured. But need to try.

I can not say that X is indicator of amateur. So I will not put here my photos with bright X. Such pictures we have enough even among the participants of the World Cup.


Though I must notice the fact that “Youth” (slalom it to 25-30 years) meets X only occasionally, and there are some athletes with complete  “organic” absense of X in any conditions (like in photo below).


Scanner_1_largeAmong the reasons of X in Internet, usually put at first place proper regualtion of ski boot (boot fiting). From my point of view the boot fit can and should be done, but it does not need to apply to boot fitters, as it is strongly recommended in the forums. There is an old method with a plumb lined from the center of the knee to the center of boot, and similar method is used in a different ways in boot fitting.


CantingThe network has stories about how to somebody such adjustment has helped to get rid of X once and for all. I am happy for them, but as in a fairy tale about Cinderella 🙂 For me it does not help. My legs by the nature are of normal adjustment, I do “canting” of boot for a long time, but it does not affect to my X.

From my point of view, a few different reasons lead indepenentally to A-frame stance, and each of this reason must be worked separately. Is it necessary or not – everyone decides for himself, I know quite good skiers who have stopped “fighting” with X and feel (and ski) good. I do not leave the hope, so this season has worked with the reasons leading to “my” X, and describe it here. I underline that we are talking of the slalom and giant slalom. In the free descents I got rid from of A-frame stance a long time ago, for this is quite enough (in my case) to control the movements of knees.


During the “classics” A-frame was not a bad thing. Here are a few pictures from the guidelines for training alpine skiing of that time.


It is interesting to note that the direct benefit of the A-frame’s illustrates only the left of the above pictures, while at the rest X is present or as a consequence of other ideas or as an element of equilibrium stance. Habit is based on the fact that the comfortable side equilibrium is reached when the pressure (in dynamics of turn) is between the skis. This is undoubtedly correct. But this stance is supported on the inner edges. That is, the main pressure is on the inner edge of one ski while the inner edge of the second skis is always ready, in case the loaded ski would slip. And this from a modern point of view is undoubtedly  wrong. balance But if this habit is already there, the muscles were trained to maintain a balance in this way, and they will do it every time as soon as the movement spins out of control. In order to recover this habit, you can try to get used to press into the outer edge. Spent a few years on it, in my case it did not work. But it is possible to get used to press just to ski, not to the inner edge. That is, if you want to bend the ski, then you need to get used not to edge it boot1immediately but just push to the ski (to the “boot”, ie in the “down to” middle of the skis) or push exactly forward (to ankle of boot), well, perhaps very little inclined inside (ie to the internal edge, but which is located at the front of ski, to the point at midway between the toe of boot and the toe of the ski). But to do this you need to be confident that ski will bend (it depends not only on the rigidity of the ski, but also on the speed). Often noticed that if “got rid of the X” skier tries to bend too hard ski for given conditions, such as a giant ski with a radius of 35 m on the Moscow short slope, then immediately appears A-frame. The opposite is also true. I took somehow for test soft “store” slalom ski and the first impression was “organic” disappearance of X. But this does not mean that the ski must necessarily be soft. If there is no habit of X, or if to get rid of it, you will bend without X any ski (not leading to an absurdity), well, or not bend, but also without X 🙂

The excess extend of outside leg

I do not talk about move legs outside the body in ski turn as it is not about A-frame.  But to X refers maximum take-away, when there may be parallel angular position of the legs. This maximum-parallel incline depends on many factors, including individual characteristics of the body, the condition of the slope, the specific features of ski model,  speed and radius of turn, etc.

At the top is the perfect take-away legs. At the bottom is the conversion in Photoshop of unnecessary in this case the extension of the outer leg and as a consequence – A-frame

Unfortunately, I feel more comfortable to “throw legs away” and then “collect them back”, ie wait for the skis come back to the body. It seems to me, too, the sequence of the classic skiing habits. Besides the fact that such habit lead to difficulties of the load of ski at the beginning of turn, it also lead to A-frame, which is poorly controlled. That is it well controlled the extended outside leg, with sometimes extremely over-edged ski. And the fact that the inner leg remained “for safety” near the body is not noticed. To “treat”it  you must first learn to notice this fact. And then just hold the leg at entry to turn (when it yet has not gone far from the body). To hold to, it means to stop the movement of the leg across the slope and by some rather psychological effort to send the body down.

Sheyka_b If you find (after it) that the leg has remained too much under the body, then the body can be directed inward, pushed from the outside leg. The pattern could be likely look as well as the take-away of  legs, but it present other inner feelings and, most importantly, to keep safety by inside leg is not necessary in principle. For be it is better to hold the outside leg by sensation in the hip (in a joint “hips neck”), and usually I need pay attention only to the left leg (due to asymmetry of movements).

A narrower (than used to) keeping skis

In my case, the width (between) of skis much depends on the sense of maintain a balance. That is, if the speed exceeds the comfort or confidence of the clutch with a slope is lost, the legs go wider. So is not easy to keep narrow skis. But if it sucseed, the X disappears organically. The easiest way to feel it on the floor, without skis, in coordination exercises. If you put your feet on shoulder width apart and imitate edge change, you have to watch out for the start of the movement of inner knee to avoid X at the beginning of the movement.

Мастер сверхузкого ведения лыж Стефано Гросс (Stefano Gross)
Master of supernarrow skiing Stefano Gross

But if you narrow your legs during the motion of edging, namely firstly put “future” inner leg to the “future” outside one, and only after that start moving of edging then no need any additional control of knee for avoid X. In the free skiing sometimes I arrange a “day of narrow skis”, or if the plans do not allow to work on it all day, then at least a few runs. In the track, if all is under control, it is easiest to narrow legs in the phase of “descent across the slope” if it is possible to say such about round turn.

The work of the internal knee (inside and down to the slope)

The possibility of free of internal (with respect to the turn) knee appears, if it was  “caught” the beginning of the arc. That is, when in a phase of movement across slope weight is fully transferred to the upper ski, while the bottom ski, which from this moment becomes the inside ski is released. And the knee, of course, too. Next,  you can do something to it, and most importantly, you need to do. If nothing is done, the ski begins go forward (because it is on a smaller radius) and the knee can take X and lock the lateral movement. So if nothing is done this knee impede. nogi_podj Several years ago, tried to draw in internal leg under the body (with sensation like in picture), but the track this is not work, because it requires an additional “backward” movement. This season, catch the feeling that if the put inner knee to a slope by easy (because all the weight is already on the outside and still upper leg) move a knee inside and down (to snow), the result is exactly the same. The knee does not impede further in the turn and even helps as outside ski begins to wrap around it. This feeling I like, because it is an equilibrium, so, hopefully, will go to new useful habit 🙂

Extension outside leg forward

tedExtension outside leg too, belongs to the first half of the arc of turn. Immediately after “caught arc” that is load upper ski (while you are still in the lower stance, skis right under the body), it is desirable to do something more. As I wrote in a separate article, you can do nothing, ski turns by itself. But slowly. For more quick turn, you need to load it more. This can be done in several ways. For example, stand up on this ski. Or even because everything happens quickly, start to stand up before on two skis. This leads to the congestion and so it dependend on the state of the body, and the movement itself is not too fast, more suitable for the giant than for slalom. Or for example, you can load  more a toe of ski and this is useful anyway because this moment correspond the change of position the ski-body. But the simplest and most reliable way is to begin quietly straighten the upper leg, but not upward through the overload, but forward and down. It’s – timely advice from colleague from our club Vitaly Sizov. It refer to X also, as the extension of the outside leg is automatically accompanied by bending the inside, and this is taking away the X. Especially it good follow after movements of the previous section about the operation of the internal knee. But note that the extension of the outside leg, leads to a temporary loss of balance, you can “ring out the nose forward”. And for this sensation you need to get used 🙂

Just breeding knees

At begin of this note I’ve mentioned that in the free descent one can get rid of X just by control of knees by keeping some distance between it. It is interesting to note that in classical skiing were the opposite exercise (which I really never did). It was necessary to hold the glove between knees, and ski. Just to elaborate on that time a useful habit of X. Now there is just the opposite devices in the form of balls and spacers. There are also exercises for breeding knees by hands. For me such methods are not necessary, but I need to maintain all the time a habit “not to X”. I want to note particularly useful of control the bend of “upper” knee also. It is necessary to try to put into the slope, and (this also applies to the fight against unnecessary twisting of the body toward the valley).

Do not turn aside knee from slalom pole

vesh_shitokI do not remember about it all the time, though this feature I have. This is especially noticeable in the shallow part of run in gates with “vertical” figures. Hit a pole by hand, but the knee still tries to dodge, as if there is no guard. That is, the X appears suddenly, when you are not expect it at all 🙂 When training in Austria, bright coach Jürgen Schasching paid special attention on this. Several runs demanded strictly ensure that every pole should be “taken” by  the middle of shin protection.

Vadim Nikitin DigInfo.ruVadim Nikitin




to top of page

Share This:

Leave a Reply

Your email address will not be published. Required fields are marked *