What should you know about fibularis brevis tendonitis?

The fibularis brevis tendon travels behind the outer ankle and attaches to the outside of the foot. It helps turn the sole outward and supports ankle stability. Repetitive sport, sloped surfaces, an ankle roll, or a rapid increase in training can make it painful. Tenderness is commonly felt behind the outer ankle or farther along the outside of the foot. A clinician may test resisted foot movement and inspect walking, balance, and ankle mobility. Ultrasound or magnetic resonance imaging may be considered if a tear or another injury is suspected.

Temporarily reduce running, jumping, and uneven-ground activity if they provoke the tendon. Comfortable walking, gentle range-of-motion work, and supportive shoes may be appropriate, provided they do not aggravate symptoms. Physiotherapy can build back calf and ankle strength while improving balance and movement control; see Physiotherapy. Strength Training Rehabilitation may help organise a gradual loading plan. For persistent symptoms, a specialist might discuss Shockwave Therapy or PRP Injection after confirming the diagnosis. Muscle Soreness After Exercise is a useful comparison when deciding whether discomfort is widespread post-exercise soreness or a focused outer-ankle problem.

Book a clinical review if symptoms interfere with work, walking, or sleep, or if they do not settle after reducing aggravating activity. Get urgent help after a sudden snap, inability to push the foot outward, inability to bear weight, substantial bruising, or a changed ankle shape. Numbness, a pale or cold foot, or rapidly spreading redness and warmth should be assessed urgently.

Is the fibularis brevis tendon the source of my pain? Is there evidence of a split, tear, or ankle instability? What level of walking and exercise is suitable now? How will progress be measured before I return to sport?