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https://hdl.handle.net/2440/68371
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Type: | Journal article |
Title: | Effect of head position on radiographic assessment of laryngeal tie-forward procedure in horses |
Author: | McCluskie, L. Franklin, S. Lane, J. Tremaine, W. Allen, K. |
Citation: | Veterinary Surgery, 2008; 37(7):608-612 |
Publisher: | W B Saunders Co |
Issue Date: | 2008 |
ISSN: | 0161-3499 1532-950X |
Statement of Responsibility: | Laura K. McCluskie, Samantha H. Franklin, J. Geoffrey Lane, W. Henry Tremaine and Katherine J. Allen |
Abstract: | Objective— To assess the effect of head position on relative position of the larynx and hyoid apparatus in horses with palatal dysfunction, and to define a standard position for radiographic assessment of laryngeal tie-forward. Study Design— Prospective clinical study. Animals— Adult horses (n=9) with palatal dysfunction. Methods— Left lateral radiographs of the larynx were obtained pre and postoperatively for 3 different head positions (flexed=90°; neutral=100°; extended=115°). Distance between thyrohyoid bone and thyroid cartilage was measured. Data were analyzed to investigate differences between head positions, and to compare differences between pre- and postoperative measurements. Results— Head position had a significant effect on relative position of the larynx and hyoid apparatus preoperatively. There was no significant difference in postoperative measurements of the 3 head positions. A significant difference between pre- and postoperative measurements was found with the head in the neutral or extended position whereas there were no significant differences between pre- and postoperative measurements using the flexed position. Conclusions— Head position affects the relationship between the hyoid apparatus and larynx preoperatively, with greatest distance occurring when the head is extended. In a flexed position, it is not possible to ascertain whether laryngeal position has changed postoperatively. Clinical Relevance— A standardized head position is necessary when assessing the laryngeal tie-forward procedure radiographically. An extended head position is most useful for this assessment. |
Keywords: | Larynx Palate, Soft Animals Horses Respiratory System Abnormalities Horse Diseases Radiography Postoperative Care Preoperative Care Prospective Studies Physical Conditioning, Animal Posture Female Male |
Rights: | © Copyright 2008 by The American College of Veterinary Surgeons |
DOI: | 10.1111/j.1532-950X.2008.00425.x |
Published version: | http://dx.doi.org/10.1111/j.1532-950x.2008.00425.x |
Appears in Collections: | Animal and Veterinary Sciences publications Aurora harvest |
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