Canis ISSN: 2398-2942

Tarsus: plantar instability

Synonym(s): Proximal intertarsal subluxation, Plantar tarsal ligament rupture

Contributor(s): Joseph Harari, Sorrel Langley-Hobbs

Introduction

  • Calcaneoquartal subluxation due to plantar-tarsal ligament rupture.
  • Common injury in racing/coursing dogs and middle-aged Collie types, especially Shetland Sheepdog; bilateral involvement not uncommon.
  • Cause: in the athlete usually occurs during racing, usually isolated injury but may be in association with other tarsal fractures/luxation, especially centrodistal luxation.
  • In domestic pet (Collie, Shetland Sheepdog) rarely present with history of trauma - may not be presented until problem is bilateral.
  • Signs: joint pain, plantigrade stance with proximal intertarsal hyperextension.
  • Diagnosis: examination.
  • Treatment: calcaneoquartal arthrodesis.
  • Prognosis: good if adequate treatment.

Pathogenesis

Etiology

  • Athlete - stresses of racing.
  • Pet - rarely a history of trauma, ligament degeneration?

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.
  • Barnes D C et al (2013) Complications of lateral plate fixation compared with tension band wiring and pin or lag screw fixation for calcaneoquartal arthrodesis. Vet Comp Orthop Traumatol 26 (6), 445-452 PubMed.
  • Wilke V L et al (2000) Intertarsal and tarsometatarsal arthrodesis using a plantar approach: a carpal arthrodesis plate or dynamic compression plates: four arthrodeses in three dogs. Vet Comp Orthop Trauma 13 (1), 28-33 VetMedResource.
  • Allen M J et al (1993) Calcaneoquartal arthrodesis in the dog. JSAP 34 (4), 205-210 VetMedResource.


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