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Comparison of a 3-hole 4.5-mm Dynamic Compression Plate and a 7-hole 5.5-mm Y Locking Compression Plate for Arthrodesis of the Proximal Interphalangeal Joint in Horses—an Ex Vivo Biomechanical Study.

Authors :
Latorre, Carlos Adolfo Salazar
de Souza, Anderson Fernando
Ramos, Paula Andrea Ramírez
Nóbrega, Fernanda Silveira
van de Graaf, Guilherme Maia Mulder
Pereira, César Augusto Martins
Ferrigno, Cássio Ricardo Auada
Hendrickson, Dean A.
De Zoppa, André Luís do Valle
Source :
Journal of Equine Veterinary Science; Nov2020, Vol. 94, pN.PAG-N.PAG, 1p
Publication Year :
2020

Abstract

The objective of this study was to compare the biomechanical properties in a single cycle axial loading test and the types of failures in two constructs (a 3-hole 4.5-mm dynamic compression plate (DCP) and 7-hole 5.5-mm Y locking compression plate (Y-LCP)) in equine proximal interphalangeal joint (PIJ) arthrodesis. One limb in each pair was randomly assigned to PIJ arthrodesis using a 3-hole 4.5-mm DCP combined with two transarticular 5.5-mm cortical screws, whereas the contralateral limb was submitted to PIJ arthrodesis using a 7-hole Y-shaped 5.0-mm LCP in conjunction with one transarticular 4.5-mm cortical screw inserted through the central plate hole. Cortical screws were inserted in lag fashion. Constructs were submitted to a single axial load cycle to failure. Construct stiffness, load, and deformation were analyzed. Dynamic compression plate and Y-LCP arthrodesis constructs did not differ significantly and were equally resistant to axial loading under the conditions studied (DCP and Y-LCP group stiffness, 5685.22 N/mm and 6591.10 N/mm, respectively). Arthrodesis of the PIJ using a DCP and two transarticular 5.5-mm cortical screws or a Y-LCP yielded biomechanically equivalent outcomes under the test conditions considered. However, Y-LCP provides less impact in the palmar/plantar bone. Application of Y-LCP with unicortical screws has equivalent biomechanical characteristics of DCP and may be a safe option for PIJ arthrodesis, where potential trauma secondary to applying bicortical screws in the palmar/plantar aspect of the pastern can be avoided. • Arthrodesis of the proximal interphalangeal joint using a dynamic compression plate or Y-shaped locking compression plate (Y-LCP) yielded biomechanically equivalent outcomes. • The Y-LCP provides less impact in the bone and maybe faster for clinical settings. • The Y-LCP with unicortical screws may reduce potential trauma in the palmar/plantar aspect of the pastern. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
07370806
Volume :
94
Database :
Supplemental Index
Journal :
Journal of Equine Veterinary Science
Publication Type :
Academic Journal
Accession number :
146534076
Full Text :
https://doi.org/10.1016/j.jevs.2020.103252