UNIVERSIDAD DE CHILE FACULTAD DE CIENCIAS VETERINARIAS Y PECUARIAS ESCUELA DE CIENCIAS VETERINARIAS

“DETECCIÓN Y DESCRIPCIÓN DE ALTERACIONES ARTICULARES EN EL CARPO DE CANINOS DE TRABAJO MEDIANTE ESTUDIO RADIOGRÁFICO”

SOFÍA JACQUELINE ANDAUR ESTEVEZ

Memoria para optar al Título Profesional de Médico Veterinario Departamento de Ciencias Clínicas

PROFESOR GUÍA: DR. JORGE MENDOZA A.

SANTIAGO – CHILE 2009

INDICE

Página ABSTRACT....................................................................................................................................................... 3 RESUMEN ........................................................................................................................................................ 4 INTRODUCCIÓN ............................................................................................................................................ 5 REVISIÓN BIBLIOGRÁFICA ....................................................................................................................... 6 ANATOMÍA .................................................................................................................................................... 6 GONIOMETRÍA DEL CARPO CANINO ..................................................................................................... 20 EVALUACIÓN RADIOGRÁFICA DEL CARPO CANINO .......................................................................... 22 ALTERACIONES DEL CARPO DIAGNOSTICADAS MEDIANTE ESTUDIO RADIOGRÁFICO ............. 26

OBJETIVOS ................................................................................................................................................... 55 MATERIALES Y MÉTODOS ...................................................................................................................... 56 RESULTADOS Y DISCUSIÓN .................................................................................................................... 60 CONCLUSIONES .......................................................................................................................................... 83 BIBLIOGRAFÍA ............................................................................................................................................ 84 ANEXO ............................................................................................................................................................ 91

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ABSTRACT

In order to detect the presence of carpal lesions, radiographic study was performed in 56 working dogs, consisting in German Shepherd and Labrador Retriever breed dogs aged between 9 month and 8 years old.

A total of 6 images were obtained by dog (routine projections: dorso palmar and medio lateral, and additional view: medio-lateral flex projection for each forelimb).

Carpal lesions were found in 67.86% of German Shepherd dogs. The radiographic changes most commonly observed in the carpus joints of these dogs were the presence of osteophytes, joint instability and irregular bone contour. In Labrador Retriever dogs, 60.71% revealed articular lesions. The most common finding on carpal radiographs was metaphyseal osteopathy, osteophytes and retained ulnar cartilage core.

According to X2 test of independence statistically significant differences were obtained for the presence of carpal injuries and > 24 month of age variable (p