Peroneal subluxation

  • Home
  • Peroneal subluxation

Peroneal subluxation

Do you ever feel instability of your ankle or “giving way?” Do feel or hear snapping or popping when walking, associated with pain? History of lateral ankle sprains? 

Peroneal subluxation maybe your diagnosis. This is very common in athletes but anyone can experience this. There are two tendons that originate in your leg and course along the outside of your ankle and insert on your foot, called your peroneal longus and brevis tendons. These tendons travel and sit within  a fibular groove (which should allow the tendons glide freely when walking) and at this level  the tendons are within the same sheath, called the peroneal retinaculum. When this retinaculum is injured or attenuated or the groove is flat and not concave, the peroneal tendons do not glide freely and “pop or snap out of the groove.” As presented in the video, upon eversion and dorsiflexion. Chronic peroneal subluxation, can cause damage and longitudinal tears in the tendons and this can be painful for the patient,if not taken care of can lead to ruptures. 

Conservative treatment may include, immobilization with cast or boot for Acute injury, ankle brace to stabilize the tendons, stretching, physical therapy, NSAIDs for inflammation.

Surgical treatment includes: Repair of the superior peroneal retinaculum, possible groove deepening, and repair of diseased (attenuated) peroneal tendons or if any longitudinal tears.