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首页> 外文期刊>American Journal of Veterinary Research >Efficacy of immobilization of the tarsal joint to alleviate strain on the common calcaneal tendon in dogs
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Efficacy of immobilization of the tarsal joint to alleviate strain on the common calcaneal tendon in dogs

机译：固定the关节以减轻犬常见跟骨肌腱拉伤的功效

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Objective-To measure strain in the common calcaneal tendon during trotting in dogs and to compare strain before and after immobilization of the tarsal joint. Animals-6 dogs. Procedures-A microminiature strain gauge was surgically implanted on the tendinous portion of the gastrocnemius muscle. Surface electromyography (EMG) values, percentage strain, and ground reaction forces were measured before and after immobilization. Peak vertical force; vertical impulse; initial, maximum, and final strain; and peak-to-peak EMG amplitude were recorded. Data were analyzed by use of a repeated-measures ANOVA and paired t tests. Results-Timing of strain data correlated closely with foot strike of the hind limb and EMG activity in all dogs. Maximum tendon strain was simultaneous with peak vertical force. Continued muscle contraction was evident after immobilization. There was no significant difference in maximum strain after immobilization, compared with maximum strain during normal motion. Minimum strain, both at the beginning and end of the strain curve, was sig-nificantly decreased for the immobilized state, compared with results for nonimmobilized joints. Conclusions and Clinical Relevance-Immobilization of the tarsal joint did not eliminate calcaneal tendon strain during weight bearing in dogs. Decreased isometric muscle contraction during the swing phase of the gait could account for smaller minimum strain in immobilized joints. Immobilization is frequently applied after Achilles tendon rupture to alleviate strain and force on the sutured repair, with possible complications because of the immobilization method. Consideration of these findings could be important in adjusting current treatment recommendations.
机译：目的-测量小跑小跑过程中普通跟骨肌腱的应变，并比较固定joint关节前后的应变。动物6条狗。程序-微型应变计通过外科手术植入腓肠肌肌腱部分。在固定之前和之后测量表面肌电图（EMG）值，应变百分比和地面反作用力。峰值垂直力;垂直脉冲初始，最大和最终应变;记录EMG峰峰值。使用重复测量方差分析和配对t检验分析数据。应变数据的结果-时间与所有犬的后肢足部打击和EMG活动密切相关。最大肌腱应变与峰值垂直力同时发生。固定后肌肉持续收缩很明显。与正常运动期间的最大应变相比，固定后的最大应变没有显着差异。与未固定关节的结果相比，在固定状态下，应变曲线的开始和结束时的最小应变均显着降低。结论和临床意义-骨关节固定不能消除犬承重期间的跟骨肌腱拉伤。步态摆动阶段等距肌肉收缩的减少可能导致固定关节的最小最小应变。跟腱断裂后常进行固定以减轻应变和缝合修复的力，由于固定方法可能会引起并发症。考虑这些发现对于调整当前的治疗建议可能很重要。

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