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Vet Surg ; 40(2): 253-9, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-21244444

RESUMEN

OBJECTIVES: To compare the biomechanical characteristics of 2 arthrodesis techniques for the equine proximal interphalangeal joint (PIP) using either a 3-hole 4.5 mm locking compression plate (LCP) or 3-hole 4.5 mm narrow dynamic compression plate (DCP), both with 2 transarticular 5.5 mm cortex screws. STUDY DESIGN: Experimental. SAMPLE POPULATION: Cadaveric adult equine forelimbs (*n=6 pairs). METHODS: For each forelimb pair, 1 limb was randomly assigned to 1 of 2 treatment groups and the contralateral limb by default to the other treatment group. Construct stiffness, gap formation across the PIP joint, and rotation about the PIP joint were determined for each construct before cyclic axial loading and after each of four, 5000 cycle loading regimens. After the 20,000 cycle axial loading regimen, each construct was loaded to failure. RESULTS: There were no significant differences in construct stiffness, gap formation, or sagittal plane rotation between the LCP and DCP treatment groups at any of the measured time points. CONCLUSION: Biomechanically, fixation of the equine PIP joint with a 3-hole 4.5 mm LCP is equivalent to fixation with a 3-hole 4.5 mm narrow DCP under the test conditions used.


Asunto(s)
Artrodesis/veterinaria , Placas Óseas/veterinaria , Tornillos Óseos/veterinaria , Fijación Interna de Fracturas/veterinaria , Caballos/cirugía , Ensayo de Materiales/veterinaria , Articulación del Dedo del Pie/cirugía , Animales , Artrodesis/instrumentación , Artrodesis/métodos , Fenómenos Biomecánicos , Femenino , Fijación Interna de Fracturas/instrumentación , Fijación Interna de Fracturas/métodos , Masculino , Articulación del Dedo del Pie/fisiología , Soporte de Peso
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