Ultrasonographic observations of the flexor tendons and ligaments of the metacarpal region of horses

R. G. Nicoll From the Departments of Veterinary Clinical Sciences (Nicoll, Wood) and Veterinary Physiology (Martin), University of Sydney, NSW, 2006, Australia.

Search for other papers by R. G. Nicoll in
Current site
Google Scholar
PubMed
Close
 BSc (Vet), BVSc
,
A. K. W. Wood From the Departments of Veterinary Clinical Sciences (Nicoll, Wood) and Veterinary Physiology (Martin), University of Sydney, NSW, 2006, Australia.

Search for other papers by A. K. W. Wood in
Current site
Google Scholar
PubMed
Close
 MVSc, PhD
, and
I. C. A. Martin From the Departments of Veterinary Clinical Sciences (Nicoll, Wood) and Veterinary Physiology (Martin), University of Sydney, NSW, 2006, Australia.

Search for other papers by I. C. A. Martin in
Current site
Google Scholar
PubMed
Close
 BVSc, PhD

Click on author name to view affiliation information

Summary

Observations were made in dorsal and sagittal planes of the ultrasonographic mean gray scale of the flexor tendons and ligaments of the metacarpal regions of 5 Thoroughbred geldings, during weight bearing and nonweight bearing. In images made when the horses were nonweight bearing, the mean gray scale of the superficial and deep digital flexor tendons and accessory ligament was significantly reduced, but that of the interosseous medius muscle (suspensory ligament) was not. When relaxed, collagen fiber bundles in the tendons and ligaments acted as diffuse, rather than specular, reflectors of ultrasonic waves leading to localized regions of hypoechogenicity and a consequent reduction in mean gray scale. The suspensory ligament, however, remained under tension during nonweight bearing and so mean gray scale was not reduced. Analyses of the ultrasonographic mean gray scale have the potential to provide quantitative data relating to the changes in echogenicity that develop in injured equine tendons and ligaments.

Summary

Observations were made in dorsal and sagittal planes of the ultrasonographic mean gray scale of the flexor tendons and ligaments of the metacarpal regions of 5 Thoroughbred geldings, during weight bearing and nonweight bearing. In images made when the horses were nonweight bearing, the mean gray scale of the superficial and deep digital flexor tendons and accessory ligament was significantly reduced, but that of the interosseous medius muscle (suspensory ligament) was not. When relaxed, collagen fiber bundles in the tendons and ligaments acted as diffuse, rather than specular, reflectors of ultrasonic waves leading to localized regions of hypoechogenicity and a consequent reduction in mean gray scale. The suspensory ligament, however, remained under tension during nonweight bearing and so mean gray scale was not reduced. Analyses of the ultrasonographic mean gray scale have the potential to provide quantitative data relating to the changes in echogenicity that develop in injured equine tendons and ligaments.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 55 55 7
PDF Downloads 72 72 0
Advertisement