Electromyographic and behavioral analysis of horses submitted to medial patellar desmotomy.

IF 1.8 3区 农林科学 Q2 VETERINARY SCIENCES
Veterinary Research Communications Pub Date : 2024-12-01 Epub Date: 2024-09-21 DOI:10.1007/s11259-024-10548-0
Nayne Vieira da Silva, Roberto Bernardino Júnior, Quintiliano Siqueira Schroden Nomelini, Gabriella Faria Pereira, Diego José Zanzarini Delfiol, Geison Morel Nogueira
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引用次数: 0

Abstract

The passive stay apparatus works by blocking flexion of the knee and tarsus joints in the horse, preventing muscle fatigue. During ambulation, if this mechanism fails to release, the animal will present upward fixation of the patella, which in severe cases, can only be treated by medial patellar desmotomy (MPD). The objective of this study was to investigate the possible electromyographic and behavioral changes, after the impairment of the passive stay apparatus, in horses who have undergone MPD surgery. Five horses presenting dorsal fixation of the patella underwent electromyographic measurements at preoperatively and immediately postoperatively, 24 h, seven, 14 and 21 days after surgery. The samples were collected on a computerized surface electromyograph designed in accordance with the standards of international society of electrophysiology and kinesiology (ISEK). To capture the signals, electrodes positioned on the tensor fasciae lata, vastus lateralis, biceps femoris and semitendinosus muscles were used, bilaterally. These muscles were chosen due to their participation in the passive stay apparatus. The electromyographic signals were collected and processed using a software calibrated to collect data with a sampling frequency of 1000 Hz per channel. The collections took place over 60 min periods, and the results were obtained from the root means square (RMS) analysis. It was noted that the preoperative average of rest in tripedal support was 62%. On the other hand, change in weight bearing member and rest in three limbs in the postoperative period did not occur. This inability to maintain tripedal support in the postoperative period prevents the horse from resting while standing. Furthermore, there was a gradual increase in the need for post-surgical muscle recruitment, resulting in long periods of decubitus due to muscle fatigue, which is less than ideal for such large animals. Therefore, it was concluded that the animals submitted to medial patellar desmotomy, in this study, presented an inability to maintain tripedal support, in addition to a greater need for recruitment of muscle fibers, evidenced by the gradual increase in the electromyographic tracing and total RMS value of the muscles evaluated.

对接受髌骨内侧脱模术的马匹进行肌电图和行为分析。
被动停留装置的作用是阻止马匹膝关节和跗关节的屈曲,防止肌肉疲劳。在行走过程中,如果这种机制无法释放,马匹就会出现髌骨向上固定的情况,严重时只能通过髌骨内侧切除术(MPD)来治疗。 本研究旨在调查接受 MPD 手术的马匹在被动滞留装置受损后可能出现的肌电图和行为变化。五匹髌骨背侧固定的马分别在术前、术后即刻、术后24小时、术后7天、14天和21天接受了肌电图测量。样本是在按照国际电生理学和运动学学会(ISEK)标准设计的计算机化表面肌电图机上采集的。为了捕捉信号,电极被放置在双侧筋膜张肌、股外侧肌、股二头肌和半腱肌上。选择这些肌肉是因为它们参与了被动停留装置。肌电信号通过校准过的软件进行采集和处理,每个通道的采样频率为 1000 赫兹。采集时间为 60 分钟,结果通过均方根(RMS)分析得出。结果显示,术前三足支撑的平均休息时间为 62%。另一方面,术后三个肢体的负重和休息都没有发生变化。由于术后无法保持绊脚支撑,马匹在站立时无法休息。此外,术后肌肉募集的需求逐渐增加,导致肌肉疲劳而长时间卧床,这对此类大型动物来说并不理想。因此,得出的结论是,在本研究中接受髌骨内侧脱模术的动物无法维持三足支撑,而且更需要肌肉纤维的募集,这一点可以从肌电图描记和所评估肌肉的总有效值的逐渐增加得到证明。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Veterinary Research Communications
Veterinary Research Communications 农林科学-兽医学
CiteScore
2.50
自引率
0.00%
发文量
173
审稿时长
3 months
期刊介绍: Veterinary Research Communications publishes fully refereed research articles and topical reviews on all aspects of the veterinary sciences. Interdisciplinary articles are particularly encouraged, as are well argued reviews, even if they are somewhat controversial. The journal is an appropriate medium in which to publish new methods, newly described diseases and new pathological findings, as these are applied to animals. The material should be of international rather than local interest. As it deliberately seeks a wide coverage, Veterinary Research Communications provides its readers with a means of keeping abreast of current developments in the entire field of veterinary science.
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