Etiology — what causes it
Load-related changes in the peroneus longus and/or brevis tendons, often after a lateral ankle sprain. Contributors include altered mechanics, chronic ankle instability, and training spikes.
Epidemiology — who gets it
Common in runners, dancers, and athletes with prior lateral ankle sprains. Often missed initially as lateral ankle pain attributed to sprain alone.
Clinical signs
Tenderness along the peroneal tendons behind the lateral malleolus, pain with resisted eversion, sometimes palpable thickening. Single-leg balance deficits common.
Symptoms
Lateral ankle and foot pain, worse with running, cutting, and lateral movements. Often progressive after a missed sprain or training spike.
Best evidence for chiropractic treatment
Conservative care emphasizes progressive eversion loading (resistance band work, heel raises with eversion bias), lateral ankle stabilization, and addressing any underlying ankle instability. Surgery is rare and reserved for tears with mechanical symptoms.
When to seek emergency care
Some symptoms need urgent medical attention — not a chiropractic visit. Call 911 or go to the nearest emergency department for: progressive limb weakness, loss of bowel or bladder control, saddle anesthesia (numbness in the groin/inner thighs), severe unrelenting pain unrelieved by position, signs of fracture after significant trauma, chest pain, stroke-like symptoms (face drooping, arm weakness, speech changes), or any rapidly worsening or unusual symptom.
Bottom line
Peroneal tendinopathy responds to progressive eversion loading and addressing the broader lateral ankle picture.