CT assessment of the influence of dynamic loading on physiological incongruency of the canine elbow

N. J. Burton*, C. M R Warren-Smith, D. P. Roper, K. J. Parsons

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

19 Citations (Scopus)

Abstract

Objectives: To present a novel technique for loading of the canine elbow joint and to quantify changes in congruency with increasing load using computed tomography. Materials and Methods: Five pairs of thoracic limbs were mounted at a mid stance angle in a custom made jig. Elbow joints were loaded to 0, 33, 66 and 100% of total individual cadaver bodyweight. At each load computed tomography of the elbow was performed. Joint space measurement was performed on sagittal plane central, lateral and medial compartment images at humero-radial (R1,R2,R3), humero-ulnar (U1, U2) and radio-ulnar loci. The effect of loading on joint spaces was assessed (P1 and radio-ulnar distance and decreased R3occurred; for medial R1 increased; and for lateral R1 and radio-ulnar distance increased. The largest increases were seen in the lateral compartment. Clinical Significance: Significant changes in humero-radio-ulnar congruency occurred suggesting pronation of the radius with respect to the ulna was induced during loading. This movement may influence the load experienced by the medial coronoid process and could play a role in the aetiopathogenesis of medial coronoid process disease.

Original languageEnglish
Pages (from-to)291-298
Number of pages8
JournalJournal of Small Animal Practice
Volume54
Issue number6
DOIs
Publication statusPublished - Jun 2013

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