Ankle Bones: Anatomy, Functions, and Pathologies

The ankle is a mobile joint in our human body, located between the leg and the foot, where three different bones, called the ankle bones , meet . Because it allows movement in one or more spatial directions, it is a very important part of our body, but at the same time, it is particularly vulnerable. For this reason, it is important to understand their anatomy and function.

Anatomy of the ankle

The ankle is a complex joint composed of three bones: the tibia, fibula, and talus. The tibia and fibula are the two bones that make up the leg. The tibia is the largest bone in the lower leg and forms the upper part of the ankle, while the talus is the smallest bone in the lower leg and forms the outer part of the ankle. The talus is the bone in the foot that articulates with the tibia and fibula.

It is one of the seven bones that form the tarsal group of the foot. The ankle bones work together to provide stability and flexibility to the ankle. They allow the foot to move up and down and side to side. The ankle bones also help absorb shock during walking and running.

Together, the ankle bones allow the foot to perform two opposing movements: dorsiflexion, when you lift your feet and walk on your heels, and plantarflexion, when you try to walk on your toes. This is because the ankle bones are held together by two sets of ligaments: medial and lateral. Thanks to its ligaments, the ankle also enjoys a certain lateral mobility. This property allows humans to walk on uneven surfaces.

Several tendons provide support to the ankle, connecting muscles to bones and also allowing us to walk, run, and jump. Structurally, a tendon closely resembles a ligament, but unlike a ligament, it connects muscle and bone. The tendons of the ankle are the Achilles tendon, which connects the calf muscles (the twins and the soleus) to the calcaneus, the anterior and posterior tibial tendons, and the peroneal tendons.

Ankle bone pathologies

Among the main causes of ankle pain are some pathologies that can affect its bones, including:

• Sprains: These are very common injuries. Following a sprain, the ankle ligaments can be stretched or torn. Ankle sprains can occur when the foot is twisted or bent unnaturally.
• Fractures: the ankle fracture This is another significant injury, although less common. Typically, this ankle injury is the result of a marked eversion of the foot and can occur due to a fall, a blow, or other trauma.

Other common problems that can affect the ankle include stretching and tearing of the ligaments that connect the various bones involved in the joint, arthritis, which causes inflammation and joint pain, or tendinitis, an inflammation of a tendon that can be particularly painful and creates particular problems with walking.

Treatment of ankle bone diseases

Treatment of ankle conditions varies depending on the specific condition.

Sprains are managed with rest, ice, and painkillers. Arthritis can be treated with medications, physical therapy, and, if necessary, surgery. Tendinitis requires rest, ice, painkillers, and physical therapy. 

Fractures may require a cast or surgery. When the fracture is severe, the patient's pain is chronic and unbearable, and mobility is permanently compromised, it may be necessary to consider an ankle replacement. 

There are various types of ankle prostheses and various procedures for joint replacement. Therefore, it's always best to rely on experienced surgeons who can inform, guide, and support you through the process of choosing and implementing the procedure you ultimately choose.

Prevention of ankle bone diseases

To prevent ankle bone diseases, there are some good habits to implement even without necessarily receiving the advice of a specialist.

Wearing well-fitting supportive shoes is essential to keep your feet safe from injury. Walking, running, and other physical activities are always recommended, but it's important to warm up before exercising and regularly stretch your ankle and leg muscles.

Finally, it is always best to avoid activities that put the ankle at risk, such as running on uneven surfaces.