E Z mate syndesmosis in simple terms is just the area where the tibia and fibula bones meet up together at the ankle joint, thus they call it a high ankle sprain.
This joint is supported by ligaments which are the syndesmosis ligaments.
When these ligaments are stretched torn or strained the two main lower leg bones (Tibia and Fibula can be separated from each other).
In severe injuries sheering injuries twisting with high rotation force the fibula bone can often be fractured or even the Tibia in high velocity and impact trauma injuries.
When players do ankle injuries the Drs and Physios often gauge the strength or integrity of the joint by squeezing the ankle from the back bone fibula and pain from it can often indicate a syndesmosis injury with pain aiding in severity of ligamental injury or bone separation, but I'm no specialist here
Dont know about the old OP i'm sure its still around but its returned to being a passe chronic groin injuriy.
Big Richo might have a better explanation Im' not involved in Osteo or OPhysio.
