Canis ISSN: 2398-2942

Radius: distal growth plate closure

Synonym(s): Distal radial growth plate closure

Contributor(s): Neil Burton

Introduction

  • Lesser incidence relative to distal ulna growth plate closure Ulnar: distal plate closure.
  • Cause: often unknown ?trauma, eg fall from a height.
  • Symmetrical and asymmetrical growth plate closure occurs - damage to lateral side of plate most common.
  • Signs: gradual onset weeks after initial injury: pain and lameness resulting from subluxation of elbow and degenerative joint disease (DJD) → long-term - deviation and deformity of limb.
  • Treatment: surgical - to restore normal elbow joint congruity and lengthen radius.
  • Prognosis: guarded - DJD a common sequela.

Pathogenesis

Etiology

  • Often unknown: ?trauma, eg fall from height.

Pathophysiology

  • Symmetrical and asymmetrical growth plate closure occurs with damage to lateral side occurring more frequently.
  • Abnormal radial growth with relative overgrowth of ulna leads to elbow subluxation.
  • Often radial head misshapen (absence of normal pressures between radius and humerus - mould joint surfaces).
  • Radius displacement often exposes coronoid process to abnormal loading forces from humeral condyles.
  • Displacement of radial head from coronoid processes and radial notch leads to area filling-in with new bone.
  • DJD a common sequela.

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.
  • Preston C A (2000) Distraction osteogenesis to treat premature distal radial growth plate closure in a dog. Aust Vet J 78 (6), 387-391 PubMed.


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