Biomechanical comparison of cortical radial graft versus ulnar transposition graft limb-sparing techniques for the distal radial site in dogs

Hooman A. Pooya, Bernard Séguin, David R. Mason, Peter J. Walsh, Kenneth T. Taylor, Philip H Kass, Susan M Stover

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Objective - To compare the biomechanical properties of radial graft (RG) versus ulnar transposition graft (UTG) limb-sparing techniques in the dog. Study design - Cadaveric study. Animals - Six pairs of normal canine thoracic limbs. Methods - In each pair of limbs, 1 limb was subjected to the RG technique and the other to the UTG technique. Limbs were tested in axial loading until failure. Modes of failure and biomechanical properties were compared between the 2 groups. Percent coverage of the metacarpal bone by the plate was retrospectively compared between the limbs that failed by fracture of the metacarpal bones and those that did not. Results - RG limbs had significantly greater stiffness, yield load, maximum load, maximum energy, and post-yield energy. All UTG limbs failed by cranial bending of the plate. Half of the RG limbs failed by caudal bending of the plate and half by fracture of the third metacarpal bone at the distal end of the plate. Limbs with <80% plate coverage of the metacarpal bone were significantly more likely to fail by metacarpal fracture. Conclusions - The RG technique was biomechanically superior to the UTG technique under the conditions studied. At least 80% plate coverage of the metacarpal bone should be achieved. Clinical Relevance - Exercise restriction and coaptation bandages should be considered for patients undergoing the UTG technique to minimize potential biomechanical complications.

Original languageEnglish (US)
Pages (from-to)301-308
Number of pages8
JournalVeterinary Surgery
Volume33
Issue number4
DOIs
StatePublished - Jul 2004

Fingerprint

limbs (animal)
metacarpus
Extremities
Metacarpal Bones
Dogs
Transplants
dogs
bones
methodology
Bone Plates
bandages
energy
Weight-Bearing
chest
Bandages
Canidae
exercise
Thorax
experimental design
Exercise

Keywords

  • Bone graft
  • Dog
  • Limb sparing
  • Radius
  • Ulna

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Biomechanical comparison of cortical radial graft versus ulnar transposition graft limb-sparing techniques for the distal radial site in dogs. / Pooya, Hooman A.; Séguin, Bernard; Mason, David R.; Walsh, Peter J.; Taylor, Kenneth T.; Kass, Philip H; Stover, Susan M.

In: Veterinary Surgery, Vol. 33, No. 4, 07.2004, p. 301-308.

Research output: Contribution to journalArticle

Pooya, Hooman A. ; Séguin, Bernard ; Mason, David R. ; Walsh, Peter J. ; Taylor, Kenneth T. ; Kass, Philip H ; Stover, Susan M. / Biomechanical comparison of cortical radial graft versus ulnar transposition graft limb-sparing techniques for the distal radial site in dogs. In: Veterinary Surgery. 2004 ; Vol. 33, No. 4. pp. 301-308.
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