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The ankle is a complex mechanism. What we normally think of as the ankle is actually made up of two joints: the subtalar joint and the true ankle joint. The true ankle joint is composed of three bones, seen above from a front, or anterior, view: the tibia which forms the inside, or medial, portion of the ankle; the fibula which forms the lateral, or outside portion of the ankle; and the talus underneath. The true ankle joint is responsible for the up-and-down motion of the foot. Beneath the true ankle joint is the second part of the ankle, the subtalar joint, which consists of the talus on top and calcaneus on the bottom. The subtalar joint allows side-to-side motion of the foot. The ends of the bones in these joints are covered by articular cartilage (1). The major ligaments of the ankle are: the anterior tibiofibular ligament (2), which connects the tibia to the fibula; the lateral collateral ligaments (3), which attach the fibula to the calcaneus and gives the ankle lateral stability; and, on the medial side of the ankle, the deltoid ligaments (4), which connect the tibia to the talus and calcaneus and provide medial stability. These components of your ankle, along with the muscles and tendons of your lower leg, work together to handle the stress your ankle endures as you walk, run, and jump. By Bridget Bigale, PTA What are the 7 Bones in the Ankle Called?The 7 bones in the ankle are: Talus, Calcaneus, Navicular, Cuboid, Cuneiform. The ankle also includes the lower portion of your two leg bones the Tibia and Fibula. The ankle joint is located above the foot, where the lower leg and the top of the foot come together. Involving about 7 major bones, the bones in the ankle are the bottom portions of the 2 lower leg bones; the Tibia and Fibula. Tibia and Fibula These two bottom portions of the lower leg bones sit on top of the Talus, which form the tibiotalar joint. Along the bottom aspect of the Talus, this bone sits on the top of the Calcaneus or heel of the foot. This region where the Talus and the Calcaneus come together creates the Subtalar joint. Moving forward, towards the top and inside regions of the foot, the Talus joins together to form the Talonavicular joint at the Navicular bone. Similarly, the calcaneus joins the outer region of the foot at the Cuboid bone to form the Calcaneocuboid joint. The two bones, the Cuboid, and Navicular bones, then join 3 smaller bones of the Cuneiform (lateral, middle, and medial). The 2 cuneiform bones (lateral and middle) join the calcaneus to form the Calcaneocuboid joint. Bones in the Ankle Many bones come together to form the various joints of the ankle/foot complex. These work together to allow for movement of the ankle and ankle. They contribute to your ability to walk, push off, and/or pivot to change directions. What Bones make up the Ankle?
What is the Bone that sticks out on the side of your Ankle?The bone that sticks out along the outside of the ankle is the lateral malleolus. This bone is specifically the bottom, outside portion of the Fibula. The inside region of the ankle is the medial malleolus. Bones in the Ankle InjuriesInjuries to the ankle joint is one of the most common in the body. Along the outside regions of the ankle, the supporting ligaments can become stretched or torn (partially or completely). Consequently, this causes instability of the ankle joint. A typical ankle sprain occurs when a patient steps onto an uneven surface and falls, causing injury to the supportive ligaments of the ankle. Additionally, this fall stretches some of the ligaments located along the outside region of the ankle, which usually results in increased pain, swelling, and tenderness. Ankle Exercises Picture Another injury that can occur to the ankle is called a fracture. A fracture usually occurs in severe circumstances where the bottom of the Fibula (outside region of the ankle) is separated or broken. This injury typically occurs when the foot is fixed against an object and is thrown into the inverted position. This causes the ligaments of the outside regions of the ankle to be stressed or torn again, resulting in increased pain, swelling, and/or tenderness. Ankle Fracture If you have an injury that limits your ability to walk or stand for prolonged periods of time, give us a call. We can help if you are experiencing pain, tenderness, or swelling of the ankle. Therefore, contact one of our specialists at 904-JOI-2000 to schedule a consultation to begin treatment. By: Bridget Bigale, PTA Related Article:
Related Video: Basic Ankle Ankle Exercises Video Book an Appointment with The Jacksonville Orthopaedic Institute Today!
Book An Appointment with a JOI Physician What is the lump on the side of my ankle?One common soft tissue mass we see in the foot and ankle is called a lipoma. Lipomas most commonly occur at the lateral aspect of the ankle joint. They can be very large and cause irritation due to rubbing in shoes. A lipoma is a benign tumor of fat cells forming in between the skin and muscle layer.
Why is there a bone sticking out of my ankle?When cartilage in the ankle is damaged, the underlying bones experience more friction and impact. This can cause the bones to undergo changes: Bone spurs appear. Abnormal bony growths, called osteophytes or bone spurs, develop on the ankle's tibia, fibula and/or talus bones.
What is the bone that sticks out on the side of your foot called?The accessory navicular (os navicularum or os tibiale externum) is an extra bone or piece of cartilage located on the inner side of the foot just above the arch.
What is the knobby ankle bone called?The hard bony knobs on each side of the ankle are called the malleoli. These provide stability to the ankle and function as the weight-bearing joints of the foot.
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What is the bone that sticks out on the side of your ankle
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