A tapered-sleeve transcortical pin external skeletal fixation device for use in horses: development, application, and experience

Veterinary Surgery : VS
David M Nunamaker, Ronald A Nash

Abstract

To report development, configuration, application, and results of a tapered-sleeve transcortical pin external skeletal fixation device (TSP ESFD) for use on fractures of the distal aspect of the equine limb. Optimization analysis of a TSP ESFD was carried out with mechanical testing and review of clinical case outcomes. Cadaveric adult third metacarpal bones (MC3) for mechanical testing; horses (n=7) with severely comminuted proximal (6; P1) or second (1) phalanx fractures. Mechanical testing of methods for attachment of TSP to the sidebars were tested as well as optimization of pin diameters. Outcome of clinical cases managed with the TSP ESFD were compared with outcomes of horses treated with previous ESFD. A TSP ESFD using 7.94 mm diameter pins was used. Survival rate was 71%. One horse with an infected P1 fracture and contralateral laminitis subsequently fractured MC3 through the distal pin hole while wearing the TSP ESFD. One mare with contralateral laminitis was euthanatized. Three horses had open fractures. Design improvements incorporated into the TSP ESFD should increase treatment success. External skeletal fixation continues to be a viable treatment alternative for severe injuries of the distal aspect of the equine li...Continue Reading

References

Jan 1, 1985·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·R HuiskesT E Crippen
Jan 23, 2004·Journal of the American Veterinary Medical Association·Beth M KrausMichael W Ross

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Citations

Feb 19, 2014·The Veterinary Clinics of North America. Food Animal Practice·Susan R Vogel, David E Anderson
Nov 19, 2013·Veterinary Surgery : VS·Fabrice RossignolJosef Boening

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