Total talar dislocation

Total talar dislocation, also known as extrusion of the talus, is a tri-articular dislocation of talus at the tibiotalar, talonavicular and subtalar joints.

Pathology

Mechanism of injury

Total talar dislocation is caused by the combination of tibiotalar plantar flexion, and either excessive subtalar supination or pronation (commonly from motor vehicle accident or fall from height). It results in complete disruption of blood supply and extensive contamination. The classic scenario is a high energey motor vehicle accident where the driver is plantar flexing the foot, the talus extrudes anteriorly and can be found in the foot well of the car.

Treatment and prognosis

  • wound irrigation, debridement and temporary stabilisation of the ankle
  • if unable to find talus, tibiocalcaneal fusion and fibular graft is a surgical option
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Article Information

rID: 35127
Tag: cases
Synonyms or Alternate Spellings:
  • Complete talar dislocation
  • Extrusion of the talus
  • Talus extrusion
  • Talar extrusion
  • Extruded talus
  • Talar ejection
  • Ejection of the talus

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Cases and Figures

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    Case 1: frontal
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    Case 1: coronal CT
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    Case 2: frontal
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    Case 2: lateral
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