Journal
VETERINARY SCIENCES
Volume 8, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/vetsci8060092
Keywords
horse; equine; gait; collagenase; XROMM; strain; tendinopathy
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Funding
- Faculty of Veterinary Medicine of Leipzig University
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This study utilized biplanar high-speed fluoroscopic kinematography to investigate tendon strain in ponies, finding that the strain in injured tendons changed during different gaits, with less load on the injured tendon during walking.
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.
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