Peroneal tendon subluxation

Peroneal Tendon Dislocation (Peroneal Tendon Subluxation)

Peroneal Tendon Dislocation is caused by the rupture of the peroneal retinacular ligament which acts to hold the peroneal tendons behind the ankle bone. This injury generally occurs following an ankle sprain

Symptoms

Intermittent pain above the ankle with or without swelling
“Popping” with dislocation of the peroneal tendons from behind the fibula bone
Pain to direct palpation to the peroneal tendons at the peroneal retinaculum

Diagnosis

Xrays three views of involved ankle of limited value
MRI standard of care but difficult to determine injury to ligament
Visible dislocation of the peroneal tendons with peroneal manual muscle testing

Treatment

Acute ankle sprain: Cast boot (CAM walker) / Aircast / Ice / anti inflammatory medications like ibuprofen and naproxen.
Peroneal Tendon dislocation: Ankle bracing within shoe gear / Ice / anti-inflammatory medications
Surgical Repair

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The first step is to determine where the affected area is on the foot, and choose the appropriate foot view below that best shows that area.

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