The ankle joint is comprised of many different muscles, ligaments and bones, allowing the foot to connect to the leg and be both stable and mobile. The ankle is very important because it serves as the foundation for stability in the rest of the body when you are standing or moving on your feet. It is surrounded by various muscles, including the peroneals, the anterior and posterior tibialis, the gastrocnemius and the soleus. Together, these muscles help stabilize the ankle joint and propel the entire body forward while walking, running or jumping. Your ankle muscles are also very important for maintaining your balance.