Morphology of distal border synovial invaginations of the equine distal sesamoid bone: comparison between computed tomography and a hoof-specific radiographic projection.
Abstract: To compare the difference and agreement of the morphology of distal border synovial invaginations on a dorsoproximal-palmarodistal oblique (DPr-PaDiO) projection with hoof-specific angle versus computed tomography. Methods: Computed tomography (CT) images and a DPr-PaDiO radiographic projection with hoof-specific angle were obtained on 50 cadaveric forefeet from 25 Warmblood horses. Computed tomography was assumed to be the gold standard. The number, shape and depth of penetration of distal border synovial invaginations into the distal sesamoid bone were evaluated with both methods, and the comparison of their measurements was statistically described. Results: Significantly more invaginations were seen on CT compared to radiography, with an observed average difference of 1.2. In none of the cases did radiography have a higher number than that observed with CT. No statistically significant difference for depth between CT and the DPr-PaDiO projection was seen, however, there was quite a large variation of the actual difference of measurements against their mean found. Radiography was underestimated when high mean values applied. The agreement between both modalities for shape was moderate to good. A very high specificity of the specific DPr-PaDiO projection for shape was found (97%). Conclusions: The radiographic projection with hoof-specific angle differs significantly from CT concerning the number and depth of the distal border synovial invaginations. Therefore, this specific view may not be considered useful in the evaluation of these invaginations.
Publication Date: 2012-07-27 PubMed ID: 22836218DOI: 10.3415/VCOT-11-10-0149Google Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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This study compares the use of two different imaging techniques: a specific type of radiographic projection and computed tomography, to count and study synovial invaginations in a small bone in the horse’s hoof. The researchers found that computed tomography was more effective in identifying these structures.
Introduction and Methods
- The aim of this research was to compare how effective two different imaging techniques were at studying structures called distal border synovial invaginations, found in the distal sesamoid bone of horse hoofs.
- The two imaging methods were a type of X-ray called DPr-PaDiO radiographic projection, which was taken at a hoof-specific angle, and computed tomography (CT), which was assumed to be the optimal method (the “gold standard”).
- These methods were applied to 50 forefeet from 25 Warmblood horses that had died. The researchers then compared the images to assess number, shape, and depth of these invaginations, using statistical methods.
Primary Findings
- The researchers found that the CT method identified significantly more of these invaginations than the radiographic projection.
- In no case did the radiographic projection identify more invaginations than were detectable on CT images.
- There was no statistically significant difference between the depth measurements obtained by CT and the radiographic projection. However, substantial variations were observed in the actual difference of measurements against their mean.
- The radiographic method consistently underestimated when high mean values were applied.
- Both methods agreed reasonably well in assessing the shape of the invaginations, with a very high specificity (97%) for the specific radiographic projection.
Conclusions and Implications
- The radiographic projection with a hoof-specific angle was found to be less accurate in identifying and assessing distal border synovial invaginations when compared with CT scanning.
- This difference in performance might imply that this type of radiographic projection may not be useful in examining these structures in horse hooves.
- As a result, it appears that CT may be the preferable method for this specific task in veterinary imaging.
Cite This Article
APA
Claerhoudt S, Bergman HJ, van der Veen H, Duchateau L, Raes EV, Vanderperren K, Saunders JH.
(2012).
Morphology of distal border synovial invaginations of the equine distal sesamoid bone: comparison between computed tomography and a hoof-specific radiographic projection.
Vet Comp Orthop Traumatol, 25(6), 453-459.
https://doi.org/10.3415/VCOT-11-10-0149 Publication
Researcher Affiliations
- Veterinary Medical Imaging and Small Animal Orthopaedics, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium. sarah.claerhoudt@ugent.be
MeSH Terms
- Animals
- Cadaver
- Foot Bones / anatomy & histology
- Foot Bones / diagnostic imaging
- Hoof and Claw / anatomy & histology
- Hoof and Claw / diagnostic imaging
- Horses / anatomy & histology
- Sesamoid Bones / anatomy & histology
- Sesamoid Bones / diagnostic imaging
- Synovial Membrane / anatomy & histology
- Synovial Membrane / diagnostic imaging
- Tomography, X-Ray Computed / veterinary
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