A joint dislocation is when there
is an abnormal separation between the bones of a joint. When this happens in your ankle
joint, it’s called an ankle dislocation. It is a severe injury.
There are 3 bones that make up the
- Shinbone (tibia)
- The smaller bone in your leg (fibula)
- A bone in your foot (talus)
The ankle joint helps your foot move up and down. Below this is another ankle joint
called the subtalar joint. This joint is between the talus and another bone in your foot
(calcaneus). This joint lets your foot move side to side. Normally, a set of very strong
ligaments hold all of these bones tightly in place.
Severe injury can pull or tear
these ligaments out of place. This creates an abnormal space between 1 or more of the
bones. The ligaments are very strong and don't pull away or tear easily. Ankle
dislocations often occur along with a break in 1 or more of the ankle bones. In some
cases, an ankle dislocation can happen without a break in the ankle bones. In these
cases, the ankle dislocation occurs along with a severe ankle sprain. A severe sprain is
when the ligaments are torn.
In most cases, the injury pushes
the talus bone behind the other ankle bones. It may also be pushed to either side, to
the front, or upwards.
Ankle dislocations can happen to people of all ages. They occur with ankle fractures much more often than with just sprains.