Overview
Peroneal tendinopathy is irritation or reduced load tolerance of the tendons that run behind the outer ankle bone. The peroneal muscles help turn the foot outward, steady the ankle on uneven ground and support the arch.
Typical Pattern
- Pain or tenderness behind/below the outer ankle bone
- Symptoms with running, hills, uneven ground or cutting
- Pain after an ankle sprain or when returning to sport too fast
- Sometimes snapping or a feeling that a tendon moves out of place
What Helps
-
Settle the outer ankle
- Reduce uneven-ground, cutting and running dose
- Avoid repeatedly provoking snapping
Progress when: Daily walking is settling
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Restore control
- Build ankle eversion and calf strength
- Start stable-ground balance
Progress when: Outer-ankle symptoms stay calm after exercise
-
Build capacity
- Progress single-leg work, hills and uneven ground
- Increase load or duration one at a time
Progress when: The ankle feels reliable
-
Return to sport
- Add cutting, trail terrain or sport drills gradually
- Build full sessions last
Progress when: No pain, snapping or next-day flare
- Reduce the specific running, cutting or uneven-ground dose that flares it
- Build ankle eversion, calf strength and single-leg balance gradually
- Progress from stable ground to hills, uneven ground and sport-specific cutting
Seek Prompt Assessment
- A pop, marked swelling or inability to bear weight after an inversion injury
- A tendon that visibly snaps over the outer ankle bone
- Pain that is very focal on bone or continues to worsen at rest
Related Guidance
This is general education, not a diagnosis. Outer-ankle pain after injury can involve bone, ligament or tendon and should be assessed when severe or persistent.