During subluxation of the tendons of the peroneal muscles, they abnormally shift forward to the lateral ankle. It is accompanied by damage to the upper cord of the fibula muscles, which should keep the tendons in their correct position. Symptoms of subluxation are pain and a feeling of jumping the tendon on the side of the ankle joint, which is most easily observed when placing your foot on the outer edge of the foot or when trying to deform the ankle joint.

The risk of subluxation or dislocation of the fibula tendons is increased in people who have an anatomically too shallow groove of the fibula in which the tendons of these muscles lie. Additional varus position of the heel predisposes to overloading the strap and weakening its structure. A history of inversion ankle sprain and chronic lateral instability of the ankle joint are also a risk factor for this type of injury.

Sagittal muscle dislocations are most often treated surgically. The procedure involves the repair or reconstruction of the upper reticulum of the fibula muscles, which holds the tendons behind the lateral ankle. Additionally, it is possible to deepen the too shallow groove of the fibula or build up the posterior edge of the fibula with bone blocks to better stabilize the tendons in their anatomical position. After surgery, you should participate in regular rehabilitation, the main goal of which will be to restore the muscular stabilization of the ankle joint and safely return to normal activity.