Treatment for Peroneus Brevis Tendonitis

The peroneus brevis runs along the outer lower leg and helps turn the foot outward and support the ankle. Repeated running, uneven surfaces, a sudden training increase or an ankle injury can irritate it. Pain may sit behind or below the outer ankle bone and can increase with walking, pushing off or turning the foot outward. A clinician may examine your gait, ankle strength and tenderness, and may use imaging when a tear or another cause needs checking.

Reduce the activity that provokes pain without keeping the ankle completely still for long periods. Supportive footwear, a temporary brace and cold therapy may be suggested after assessment. A physiotherapist can introduce gentle movement, calf flexibility work, balance practice and strengthening that gradually loads the tendon. Return to running or jumping should follow comfortable walking and controlled exercise. Shockwave therapy or PRP injection may be discussed in persistent cases, but suitability depends on the examination and diagnosis.

Arrange an assessment if outer-ankle pain keeps returning, limits normal walking or does not settle with reduced activity. Seek prompt care after a snap, sudden weakness, marked swelling, bruising, deformity or inability to bear weight, because these features can occur with a significant tendon or bone injury. Urgent assessment is also sensible if the foot becomes numb, unusually cold or changes colour.

Ask whether the tendon is irritated, torn or affected by ankle instability; which activities should be paused; what progression should guide exercise; and when a brace, imaging or another treatment is appropriate.