The Reduction of Humeral Fracture with Intramedullary Deer Antler Pin in Pigeons（Columba livia）
| Autor: | Tzu-Chuan Ting, 丁子娟 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 Fracture is a challenging problem in domestic as well as in wild birds. Wing and leg fractures in birds are most common problems. Reduction of a fracture is difficult, especially with the humerus, which is a pneumatic bone and easily shattered by excessive stress. Long-bone fractures in avian species have been managed with a variety of techniques, such as external coaptation, intramedullary pins, bone plates and external skeletal fixators (ESF). Complications associated with the use of stainless-steel pins filling the medullary cavity include pin migration, tethering of adjacent soft tissues, and excessive pin weight. Moreover, a second surgery for implant removal is often required after fracture healing. Interest in eliminating the need for a second surgery has prompted a search for biodegradable fracture fixation devices that cause minimal morbidity. Our objective is to assess the efficacy of deer antler intramedullary pins compared to that of bone plates for the repair of avian humeral fracture. Fifteen mature pigeons were randomly assigned to two separate groups, one using deer antler intramedullary pins (n=10) and the other with additional bone plates (n=5). Oblique mid-diaphyseal fracture of left humerus were artificially induced for each bird. Fractures were then stabilized with deer antler intramedullary pins, with or without bone plates. Radiology examination were performed in the 3rd, 6th, 12th and 18th post-operative week. Flight ability were recorded in 4th, 6th, 8th, 10th, 12th, 18th post-operative week. All fractures healed eventually with calluses observed in the 3rd week, Deer antler pins in 3 pigeons were barely visible in the 18th week. There were no significant differences in callus thickness between the two groups at every stage(P>0.05). Flight ability were recorded in 70%(7/10) and 60%(3/5) of the two respective groups in the 18th week. In conclusion, deer antler intramedullary pins appear to provide an alternative for the repair of avian humeral fractures. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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