Peroneal Tendon Dislocation/Dysfunction

The Peroneal tendons are two tendons whose muscles (Peroneus Brevis and Peroneus Longus) originate on the outside of the calves. These two muscles allow you to roll to the outside of the foot while standing.

These tendons act as “stirrups” because they help hold up the arch of the foot. These tendons have a lot of leverage as they both make a sharp turn at the outside of your ankle, and one makes a second turn at the outside of your midfoot, diving under the foot and into the middle arch. The muscles are held in place by a tight band of tissue called the peroneal retinaculum. Injury to the retinaculum can cause it to stretch or even tear. When this happens, the peroneal tendons can dislocate from their normal course, causing them to lose their leverage.

Snow skiing, football, basketball, and soccer are the most common sports activities that can result in peroneal tendon dislocation. Ankle sprains have also known to lead to the condition.

Patients usually have to use crutches after such an injury, in order to allow this strain to heal. Sometimes, a splint or compression bandage is applied to decrease swelling. Anti-inflammatory medications and ice also supplement treatment. Consult your physician before taking any medications.

In moderate to severe injuries of the peroneal tendons, surgical intervention is sometimes necessary to re-establish the normal anatomical relationships and fuctions.