Wagner Franziska C, Gerlach Kerstin, Geiger Sandra M, Gittel Claudia, Böttcher Peter, Mülling Christoph K W
Institute of Veterinary Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Leipzig University, An den Tierkliniken 43, 04103 Leipzig, Germany.
Department for Horses, Faculty of Veterinary Medicine, Leipzig University, An den Tierkliniken 43, 04103 Leipzig, Germany.
Vet Sci. 2021 May 27;8(6):92. doi: 10.3390/vetsci8060092.
The superficial digital flexor tendon (SDFT) is the most frequently injured structure of the musculoskeletal system in sport horses and a common cause for early retirement. This project's aim was to visualize and measure the strain of the sound, injured, and healing SDFTs in a pony during walk and trot. For this purpose, biplanar high-speed fluoroscopic kinematography (FluoKin), as a high precision X-ray movement analysis tool, was used for the first time in vivo with equine tendons. The strain in the metacarpal region of the sound SDFT was 2.86% during walk and 6.78% during trot. When injured, the strain increased to 3.38% during walk and decreased to 5.96% during trot. The baseline strain in the mid-metacarpal region was 3.13% during walk and 6.06% during trot and, when injured, decreased to 2.98% and increased to 7.61%, respectively. Following tendon injury, the mid-metacarpal region contributed less to the overall strain during walk but showed increased contribution during trot. Using this marker-based FluoKin technique, direct, high-precision, and long-term strain measurements in the same individual are possible. We conclude that FluoKin is a powerful tool for gaining deeper insight into equine tendon biomechanics.
指浅屈肌腱（SDFT）是运动马匹肌肉骨骼系统中最常受伤的结构，也是导致马匹过早退役的常见原因。该项目的目的是观察和测量一匹矮种马在行走和小跑时健康、受伤和正在愈合的指浅屈肌腱的应变。为此，双平面高速荧光透视运动学（FluoKin）作为一种高精度的X射线运动分析工具，首次在马的肌腱上进行了体内应用。健康指浅屈肌腱掌骨区域的应变在行走时为2.86%，小跑时为6.78%。受伤时，行走时应变增加到3.38%，小跑时降低到5.96%。掌骨中部区域的基线应变在行走时为3.13%，小跑时为6.06%，受伤时分别降至2.98%和升至7.61%。肌腱受伤后，掌骨中部区域在行走时对总应变的贡献较小，但在小跑时贡献增加。使用这种基于标记的FluoKin技术，可以在同一个体上进行直接、高精度和长期的应变测量。我们得出结论，FluoKin是深入了解马肌腱生物力学的有力工具。
