Clinical biomechanics of skiing.

Abnormalities of lower-leg alignment may lead to a number of skiing problems. Tibia vara may cause difficulties in turning and riding a flat ski unless the boot cuff is properly adjusted to the lower leg. Varus deformities in the foot may lead to boot-fitting difficulties, foot and knee pain, and the inability to edge a ski turn properly. Compensation for these problems with an appropriately posted, corrective, orthotic device may allow skiing participation with greater comfort and better performance.