Peroneal tendinopathy is an rare issue with the tendons on the outside of the rearfoot. The condition usually occurs in runners in which the stresses on these tissues are so a lot higher. There are 2 peroneal muscles on the of the leg whose tendons pass round the outside of the ankle joint with one tendon attaching on the lateral side of the foot at the base of the fifth metatarsal. The other tendon goes under the foot to attach to an area close to the middle of the arch of the foot. The peroneal muscles have many different functions, but a main one is to stop the ankle joint rolling outwards and ending up with a sprained ankle. As they work hard during that task, the stress on the tendons can be too much for the tissue to tolerate and they end up with a peroneal tendonitis.
Usually the condition starts off with pain either over or just below the lateral ankle bone with or without some swelling. In some the inflammation develops later. With ongoing exercise the symptoms becomes more constant and gradually worse. A common finding in those with peroneal tendinopathy is a lower supination resistance. This means that it is easy for the ankle to supinate or roll outwards. This makes the peroneal tendons to be very active, so if you then combine it with higher level of sporting activity, then the tendon is at higher risk for an overuse injury.
Dealing with Peroneal Tendonitis almost always begins with minimizing the load by reducing exercise levels and also the use of shoe wedging or foot orthotic to pronate or tip the foot inwards so the muscle doesn't have to function as hard. Ice and anti-inflammatory drugs can also help lessen the pain and swelling.