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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad del Zulia
2004
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| Online Access: | https://www.redalyc.org/articulo.oa?id=95914608 |
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Table of Contents:
- The effects of nutrient artery ligation on the development of the distal ulnar metaphysis of the dog Manuel Alvarado Morillo Veterinaria Dog ulna ligation nutrient artery A total of 18 dogs were used in this study. They were obtained from the VeterinaryHospital of the University of Pennsylvania, Comparative Cardiovascular Studies Unit andfrom a dog pound of the Veterinary Policlinic, University of Zulia, Faculty of VeterinarySciences. Ablation of the nutrient artery by ligation of the palmar interosseous artery wasperformed in 10 dogs; 6 one-month-old dogs; 2 two-month-old dogs; 2 three-month-olddogs. Radiographic examination of the forelimbs at a weekly interval was performed inthese 10 dogs from one to six weeks postoperatively. The opposite normal front leg wasused as a control. Six dogs were sacrificed at one month of age and arteriograms of theforelimbs were made. The radiographic changes observed during the first postoperativeweek were an increased in density and diameter of the distal ulnar metaphysis, increasedwidth of the distal ulnar physis, and a decrease in length of the ulnar diaphysis. Theseradiographic changes were observed decreasing in severity during a period of fivepostoperative weeks. At six weeks postoperatively the distal ulna was similar to thecontrol. Between 3 to 5 weeks postoperatively the metaphyseal density of the ulna wasdecreased and irregular. The decrease in metaphyseal density resulted from a wedgeshapedretained cartilaginous tissue core wich extended proximally into the metaphysis. Adiminished blood supply to that area was observed angiographically and histologically inall dogs. The changes observed in the distal ulnar metaphysis in histologic sections andradiographs are comparable to those observed in the distal metaphysis of the ulna inyoung giant dogs with retained enchondral cartilage. The radiographic and histologicalfindings observed in this study suggests that the lesion observed in rapidly-growing younggiant dogs in the distal ulna is due to a diminished blood supply to the metaphyseal area.The study was designed with the specific objective to determine the effect on bone growthafter ablation of the nutrient artery of the ulna of the dog 2004 artículo científico 0798-2259 https://www.redalyc.org/articulo.oa?id=95914608 en http://www.redalyc.org/revista.oa?id=959 Revista Científica application/pdf Universidad del Zulia Revista Científica (República Bolivariana de Venezuela) Num.6 Vol.XIV