Peroneal Tendonitis

Condition

What is Peroneal Tendonitis?

Peroneal tendonitis is irritation and inflammation of the peroneal tendons, which run along the outer side of the ankle and foot. These tendons are key stabilisers of the ankle, especially during walking, running, and balancing.

When overused or injured, the tendons can swell and become painful. Because they are part of the ankle’s supporting structures, peroneal tendonitis is often grouped under ankle tendonitis.

Peroneal Tendonitis

Peroneal Tendonitis Pain Location: Where Does It Hurt?

The most common symptom is outer ankle pain. This discomfort is usually felt:

Just behind or below the bony bump on the outside of the ankle.
Along the outer side of the foot.
Sometimes higher up the leg, following the tendon’s path.

Recognising the location of pain is important in distinguishing peroneal tendonitis from other ankle problems.

Common Causes of Peroneal Tendon Pain

Peroneal tendonitis usually develops gradually, rather than from a single injury. Common causes include:

Overuse – repetitive ankle movements in sports like running, basketball, or football.
Ankle sprains – past injuries can weaken the ankle and strain the peroneal tendon.
Foot shape – High arches or flat feet may place extra stress on the tendons.
Sudden changes in activity – e.g. going from low activity to intense training too quickly.

Peroneal Tendonitis VS Peroneal Tendon Tear: What’s The Difference?

While tendonitis involves inflammation, a peroneal tendon tear is more serious. In a tear, the tendon fibers split or rupture. Signs suggesting a tear include:

Sudden sharp pain on the outside of the ankle.
Weakness or instability when standing or walking.
A “snapping” sensation in the ankle.

A specialist assessment is essential to confirm whether the problem is tendonitis or a tear.

When Should You See a Foot & Ankle Specialist?

Mild peroneal tendonitis may improve with rest and home care. But you should consult a foot and ankle specialist if you notice:

Persistent pain on the outside of the ankle that does not improve with rest.
Swelling, tenderness, or warmth along the peroneal tendon.
Pain that interferes with walking, exercise, or work.
Snapping, weakness, or instability in the ankle.

Delaying treatment risks worsening inflammation or even progression to a tendon tear. A specialist can confirm the diagnosis and recommend tailored treatment to protect long-term ankle health.

How is Peroneal Tendonitis Diagnosed?

Diagnosis usually involves:

Physical examination – testing for tenderness, swelling, and pain with movement
Imaging – MRI or ultrasound may be used to confirm tendonitis and rule out a tear

Accurate diagnosis is key to choosing the right treatment and avoiding complications.

Peroneal Tendonitis

Peroneal Tendonitis Treatment Options

Ankle fractures do not always require surgery. Your doctor will decide whether surgery is necessary based on the specific characteristics of your fracture. Factors like the number of bones broken, the degree of displacement, and the involvement of ligaments are all considered.