Shin damage because of boots or technique?

I have a colleague who told me a story about his shins being skinned, even after just 2-3 days of skiing. He got sort of used to it, because before leaving on a ski trip he shaves his underlegs to avoid hairs growing into the wounds and causing infections... After a week or so skiing the skin needs to restore for 2-3 weeks.

It is absolutely abnormal, but anyone has a clue what could be wrong there?

Some additional info:
With rental boots the problem occurs 1 day earlier than with his own boots, which are Salomon Xwave with flex 85.
We never skied together, but is seems that his skiing is quite 'aggressively', with plenty of linked short turns.

Dino,
Think what you do when skiing!

You "move" your center of gravity ( body) fore and aft while skiing. If you constantly keep pressure on tips at all times, you are FORCING turns, FORCING skis!

Poor aggressive technique. Doomed to everlasting "intermediate" level".

Not normal. Not acceptable.

Try this solution for your friend. On easy run ski with all buckles ( I really mean all) undone! After 30 minutes of this skiing, your friend will be forced to stay neutral in boots and neutral on skis. No more shin problems, better skiing, longer life, and finally will progress to expert level faster!

Try it!!!

Help me out here pav. This is a topic I have always had an interest in. You say you have to have to stay neutral in boots.

I assume when you are doing a lot of upwards/downwards movement your legs have to move. Sore chins are caused by legs rubbing against boots - the only way they can rub is if they are a bit loose therefore allowing friction against the boot and leg = sore shins.

How do you force your turns?

Iceman

pav's right - with modern carvers just weight the edges & they'll turn for you. You don't need heavy pressure against the front, or any other part of the boots. Shins will skin quicker the poorer fitting the boot because of more scope for movement if you have an over-agressive technique.