Canis ISSN: 2398-2942

Tarsocrural luxation

Synonym(s): Talocrus luxation, Tibiotarsal luxation

Contributor(s): Neil Burton, James Cook, Sorrel Langley-Hobbs

Introduction

  • Cause: disruption of collateral support due to closed malleolar fracture, open malleolar fracture/shearing injury, collateral ligament rupture, collateral ligament avulsion.
  • Signs: lateral injuries result in varus (medial) angulation of the foot and medial injuries result in valgus (lateral) deviation. Instability is easily palpable and confirmed radiographically.
  • Diagnosis: radiography, stress radiography, palpation.
  • Treatment: surgical stabilization.
  • Prognosis: management and prognosis will depend upon co-existing injuries and intended function of dog. Reasonable return to function for domestic pet - poor for athletic dog.

Pathogenesis

Etiology

Trauma

  • Significant trauma required to result in talocrural luxation, eg fall or road traffic accident.

Pathophysiology

  • Complete rupture or loss (shear injury) of one of both collateral ligaments results in dislocation of the talocrural joint.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Frame K, Bridges J P & Worth A J (2017) Effect of a calcaneo-tibial screw on medial and lateral stability of the canine tarsocrural joint ex vivo. Vet Comp Orthop Traumatol 30 (5), 331-8 PubMed.
  • Beever L J, Kulendra E R & Meeson R L (2016) Short and long-term outcome following surgical stabilization of tarsocrural instability in dogs. Vet Comp Orthop Traumatol 29 (2), 142-148 PubMed.
  • Beardsley S L & Schrader S C (1995) Treatment of dogs with wounds of the limbs caused by shearing forces - 98 cases (1975-1993). JAVMA 207 (8), 1071-1075 PubMed.
  • Aron D N (1987) Prosthetic ligament replacement for severe tarsocrural joint instability. JAAHA 23 (1), 41-55 VetMedResource.


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