What should you know about lateral malleolus tendonitis?

The tendons behind the lateral malleolus help control the ankle and support the foot as it moves. Repeated running, uneven-ground walking, a sudden training change, or an ankle sprain can increase their workload. Pain may feel sore or sharp along the outer ankle and can be accompanied by swelling, tenderness, or a snapping sensation. Muscle soreness after exercise usually settles as the tissues recover; persistent focal pain or pain with ordinary walking deserves a closer examination.

Temporarily reduce hills, running, jumping, and uneven surfaces that provoke symptoms. Supportive footwear and a gradual return to loading are often useful. A physiotherapist can assess ankle control, calf strength, balance, and movement technique, then build a progressive exercise plan. Strength training rehabilitation may restore tendon capacity. Shockwave therapy or PRP injection can be discussed in selected persistent cases, but the diagnosis and suitability should be confirmed first.

Seek assessment after a sudden snap, substantial swelling, bruising, or difficulty bearing weight because a tendon injury or fracture may need to be excluded. Arrange review if pain persists, worsens, or repeatedly returns despite activity changes. Urgent care is needed for a visibly deformed ankle, a cold or pale foot, new numbness, or rapidly escalating pain.

Which tendon is involved, and could there also be a ligament or bone injury? Do I need imaging? What activities can I continue safely? Which exercises should start first, and when would shockwave therapy or PRP injection be reasonable?