Lots of people don’t do their boots up properly creating a delay in the boot from when you bend your leg each time you turn when skiing. This causes a banging on your leg well known as shin-bang.
Simply doing your boots up properly will help greatly with this.
We recommend you always do the top buckles up first and with the correct fit, the lower buckles are just closed to create a seal.
Another reason this could be happening is that you are in a ski boot that is too stiff. When you try to bend your leg, the boot doesn’t bend enough and you find yourself hanging on for the ride causing your shins and lower leg to become painful after skiing. All ski boots can be made softer by removing the rivet from the rear of the boot or removing some of the plastic in the shell to create more flex.
Another recommendation to improve this is to fit a Booster Strap to your boots. Almost all ski boots come with a boot strap at the top of the cuff to help keep the boot snug on your leg once it has been done up. The Booster Strap has a stretchy yet strong elastic material instead of rigid canvas type strap that your boot comes with. This stretchy elastic boot strap helps eliminate shin bang and offers the skier more rebound at the end of the turn, creating more power with less fatigue.