Knee and hip pain are the most common cycling injuries, especially in the early season. The most common cause of knee and hip pain in cyclists is iliotibial band (ITband) syndrome. The IT band is a thick fibrous band of tissue, which runs on the outside of the leg from the hip to the knee. Pain is caused
when the band becomes tight and rubs over the bony prominences of the hip (greater trochanter) and/or the knee (lateral epicondyle). Tight
inflexible lower extremity muscles may worsen the condition. Pain may also be caused by inappropriate seat position, saddle position, cleat
alignment, or by individual cyclist anatomy.
A simple seat height adjustment may ease the forces placed on the knee. If the seat is too low, too much stress is placed on the knee from the patellar and
quadriceps tendons. If the seat is too high, pain may develop behind the knee. Therefore, proper seat height is essential.
There are several different ways to determine proper seat height. The easiest way to do this is to allow one pedal to drop to the 6 o'clock position and
observe the angle of flexion in the knee joint. There should be a 25-30 degree flexion in the knee when the pedal is at the bottom most point.
Another method is to measure your inseam (in centimeters) and multiply this measurement by 0.883. This should be your distance from the top of
the seat to the center of the bottom bracket. Your hips should not rock back and forth when you pedal - that means your legs have to stretch to
far to reach the bottom of the pedal stroke. If your hips rock when pedaling, lower your saddle until you achieve a smooth pedal stroke
I hope this helps!