Suspensory Branch Desmitis in a Horse: Ultrasonography, Computed Tomography, Magnetic Resonance Imaging, and Gross Postmortem Findings.

This research involves a case study of a horse diagnosed with a chronic injury in the branch of its suspensory ligament, using imaging techniques like ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI). These findings were verified by postmortem examination and the research suggests that CT and MRI can be invaluable in diagnosing similar conditions.

Case Presentation

• The study is based on a 10-year-old draught horse with a chronic injury of eight months in the branch of the suspensory ligament (SL). The horse showed clinical signs of lameness, pain, heat, and swelling from its tarsus to the hoof.

Ultrasonography Findings

• Ultrasonography was employed to view the horse’s SL branches. The images revealed them to be enlarged and presented imperfect demarcation of the SL branches’ margins.
• There were also significant amounts of periligamentous echogenic materials, which are indicative of fibrosis or the formation of excess fibrous connective tissues.

Computed Tomography (CT) Observations

• The CT scans revealed no bone lesions, but showed enlarged and inconsistent SL branches.
• Evidence was also found of adhesions around the SL, which suggests inflammation or injury, as well as air pockets within these adhesions.

Magnetic Resonance Imaging (MRI) Findings

• Through MRI, no abnormal signals were recorded from the proximal part of the SL or its body, suggesting normality in these areas.
• However, high and intermediate signal intensities were received from periligamentar fibrous adhesions and inflammatory fluid, respectively, indicating inflammation or injury in these areas.

Postmortem Examination

• The findings observed with CT and MRI were confirmed through a gross postmortem examination. This comparison confirms the effectiveness and accuracy of these imaging tools for diagnosing conditions such as Chronic SL branch desmitis.

Conclusion

• The study concludes that CT and MRI serve as effective diagnostic tools for identifying extensive adhesions that may be associated with chronic SL branch desmitis, a commonly diagnosed problem in horses of varying ages and disciplines.