Digital analysis of ulnar trochlear notch sclerosis in Labrador retrievers

Burton, Neil J.; Comerford, Eithne; Bailey, Michael; Pead, M. J.; Owen, M. R.

doi:10.1111/j.1748-5827.2006.00259.x

Cited by 32 publications

(55 citation statements)

References 19 publications

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“…In elbows with FCP we found lower optical density (increased radioopacity) in the distal segment of the trochlear ulnar notch. These results are in agreement with the results of digital analysis of subchondral sclerosis of the trochlear ulnar notch in another study (Burton et al 2007). They are also in agreement with the subjective evaluation of the opacity of the trochlear ulnar notch of elbows with FCP in other studies (Wind 1986;Berry 1992;Hornof et al 2000).…”

Section: Discussionsupporting

confidence: 83%

“…By analysis of the obtained data in healthy elbows we found a very high correlation between the median optical density of the caudal cortex of the ulna and the median optical density of the selected segment of the distal and caudal part of the trochlear notch of the ulna. Similar results were obtained also by Burton et al (2007), who found by a different method at various exposition values high correlation between the intensity of pixels of the caudal cortex of the ulna and the intensity of pixels of the selected regions of the trochlear notch of the ulna (r = 0.98). Correlation between the median optical density of the caudal cortex of the ulna and the median optical density of the selected segment of the trochlear ulnar notch was very high.…”

Section: Discussionsupporting

confidence: 76%

“…A probable cause of this phenomenon is the fact that the vertically directed articular surface of the caudal part of the trochlear ulnar notch is not a weight-bearing articular surface of the elbow and thus it is not exposed to abnormal load, and also the fact that it is distant enough from the insertion of the joint capsule. Likewise Burton et al (2007) did not find in this part of the trochlear ulnar notch a significant change in pixel intensity between elbows with FCP and the control group of healthy elbows.…”

Section: Discussionmentioning

confidence: 86%

“…For digital quantification of optical density in our study we used our own method derived from the method used in the study of Burton et al (2007). By analysis of the obtained data in healthy elbows we found a very high correlation between the median optical density of the caudal cortex of the ulna and the median optical density of the selected segment of the distal and caudal part of the trochlear notch of the ulna.…”

Section: Discussionmentioning

confidence: 91%

“…in regions more distant from the articular surface. Burton et al (2007) reported the site with the biggest difference in pixel intensity was the proximal segment of the distal part of the trochlear ulnar notch in the region of the base of PCM. There may be several reasons leading to such discrepant results and they may be intercombined.…”

Section: Discussionmentioning

confidence: 99%

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Digital Radiographic Analysis of Optical Density of the Distal Segment of the Trochlear Notch of the Ulna in Labrador Retrievers with Fragmented Coronoid Process

Proks¹,

Stehlík²,

Irová³

et al. 2010

Acta Vet. Brno

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The aim of the study was to find whether there is a difference in the optical density of the subtrochlear region of incisura trochlearis and in the region of processus coronoideus medialis ulnae in elbow joints with fragmented processus coronoideus and in healthy elbow joints of the Labrador retriever breed.We evaluated digital radiographs of elbows (n = 26) with arthroscopically or arthrotomically proven FCP and digital radiographs of healthy elbows (n = 28). A template was made on radiographs in the JiveX program (Visus Technology Transfer) demarcating individual regions of interest (ROI) in which median optical density was measured. For normalisation of median optical density data of individual ROI, median optical density of the caudal ulnar cortex was used. Elbow joints with fragmented processus coronoideus had a lower mean median optical density in the distal part of incisura trochlearis compared to healthy elbow joints. The lowest median optical densities were found in the region of processus coronoideus medialis and in the distal part of the trochlear notch of the ulna in the region of processus coronoideus lateralis. The biggest difference in median optical densities between elbows with FCP and healthy elbows was found in regions distant from the articular surface.In evaluation of the opacity of the trochlear notch of the ulna it is appropriate to assess the whole region of the proximal ulnar metaphysis from the articular surface to the caudal ulnar cortex. Dog, elbow dysplasia, subtrochlear sclerosis, fragmented coronoid process

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

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