Because there are so many tendons in the ankle; and because these tendons are surrounded by and covered with ligaments and fascia, this area has great potential for both TENDINOPATHY and FASCIAL ADHESION. It is often difficult to tell the two apart (not that it really matters — HERE). In the back of the foot / ankle, there is the potential for ACHILLES TENDINOSIS. On the inside of the ankle you can develop POSTERIOR TIB TENDINOSIS. And on the front of the ankle, people develop ANTERIOR TIBIALIS TENDONOSIS.
Bear in mind that there are any number of ELASTIC, COLLAGEN-BASED TISSUES that are not shown in these pictures.