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What are peroneustendinosis?

On the outside of the foot, the tendons from the muscles peroneus longus and brevis run down behind the outer ankle and attach to the outside and bottom of the foot, respectively. Its main functions are to assist in toe lifting and pushing with the foot, stabilize the ankle and prevent ankle sprains. The pressure that the tendons are exposed to towards the back of the outer ankle when the foot is loaded can lead to can lead to irritation and injury - peroneustendinosis. Most commonly, this affects people who are active in sports that involve repetitive strain on the foot, such as running, athletics, football, floorball. High arches can also make it easier to get these ailments.


Physiotherapy at Alta Vita Physiotherapy


Damage to the platforms is divided into three types:

Peroneous tendinosis: Occurs over a long period of congestion and often occurs gradually. The inconvenience location for peroneustendinosis is behind and below the outer ankle. Symptoms are pressure soreness and often some swelling in the same area. Pain occurs to varying degrees when you have to push away with the foot, depending on how extensive the injury is. At the beginning of an injury process, it can be painful, especially in the mornings, when but gets up after sitting for a while and at the beginning of his training. The pain then subsides when you get warm in the foot and returns after the activity is over. Later in the injury process, the pain does not subside when you get hot in the foot, but it hurts more or less all the time when you load the foot.

Peroneous dislocation (dislocation = dislocation): The retina (ligament) that holds the tendons in place behind the outer ankle breaks and the tendons slide out of place on the tuber under load on the foot. One symptom is that it snaps at the ankle when it happens, sometimes in combination with pain. This often occurs in connection with an acute injury to the foot, such as ankle sprain. If this is allowed to continue untreated, the abrasion it entails for the tendon can lead to electrical partial rupture or rupture.

Peroneus ruptures: These can occur in connection with a sprained ankle and in connection with jumping. If you have a long-term tendinosis in one or both peroneus tendons, the risk of partial rupture or rupture in the event of a sudden load on the tendon increases. Symptoms of rupture and partial rupture are pain behind and under the outer ankle, swelling in the area. You can often feel weak and unstable in the foot under load.

Treatment of peroneussenetendinos:


As always, our physiotherapists carry out a thorough examination where we, among other things, look at what it looks like in the area, examine mobility and stability in the ankle and note what hurts and what does not. If we suspect an effect on the peroneal nerves, we recommend that one  ultrasound diagnostics  performed to ensure that there is no partial or total rupture of the tendons.

Treatment may consist of relieving the foot. If the patient is lame due to the pain in the foot, we recommend 1 crutch stick to normalize the gait and reduce the load on the foot a bit. We'll post one  individual training program  to gradually increase the load tolerance in the peroneuses.  Shock wave therapy  can be a good help to speed up the healing of the tendon (s).

Treatment of partial rupture, total rupture or dislocation of the peroneal nerves: If we can ensure that any of these diagnoses are present with ultrasound, we will send the patient on to the orthopedist for a decision on surgery.




The prognosis for the cases that do not proceed to surgery is good and most can return to full to original activity. However, it can be expected that it will take a few months with gradual improvement when working to rehabilitate tendon structures.

Peroneustendinosis can also be called peroneus tendinosis, peroneustendinitis, peroneus tendinitis.

​Physiotherapy at Alta Vita Physiotherapy

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