Tendinopathy is an injury to the tendon. It can cause pain, swelling, and limited movement. The injury can include:

  • Tendonitis—inflammation of the tendon
  • Tendinosis—tiny tears in the tendon tissue with no significant inflammation

The peroneal tendons run along the outside of the ankle bone. Treatment depends on the severity of the injury.

Peroneal tendinopathy often occurs as a result of:

  • Repetitive overuse injuries which may occur from regular activities
  • Trauma to the ankle such as a sudden twisting of the ankle or foot
  • A sprained ankle that turned inward
  • Overstretching the foot