Although most people have never heard of the Tibialis Anterior muscle, it is capable of causing great problems. The Tibialis Anterior muscle is exactly where you would expect to find it — on the front (anterior) side of the tibia (the bigger of the two lower leg bones). You can make this muscle contract by pulling your toes up towards your shins as far as you can get them.
Although ANTERIOR TIBIAL TENDINOSIS can be caused by a whole host of things including lots of running up or down hill, interestingly enough, it is frequently caused by having shoes tied too tight on the tendon itself (note picture below). Probably why 15% of all runners deal with this problem, which, by the way, is heavily associated with SHIN SPLINTS.