Magnetic resonance and radiographic diagnosis of osseous resorption of the flexor surface of the distal phalanx in the horse.
Abstract: Osseous resorption of the flexor surface of the distal phalanx of the horse has been identified previously using magnetic resonance (MR) imaging; however, little is known about the prevalence and characteristics of this lesion. Objective: To establish the MR prevalence of resorptive lesions in the flexor surface of the distal phalanx and identify concurrent lesions associated with this finding and associations between the MR and radiographic findings. Methods: Horses with distal extremity MR and radiographs performed within 2 weeks of each other were included in the study. The flexor surface of the distal phalanx was graded independently on both modalities for the presence of osseous resorption. The sensitivity and specificity of radiography for identifying osseous resorption was calculated using MR as the gold standard. Results: Eighty-two MR studies met the inclusion criteria, 8 of which included osseous resorption of the flexor surface of the distal phalanx. Concurrent injury to the deep digital flexor tendon and the navicular bone was a common finding. An association between MR and radiographic grades was identified. Radiography had a high specificity (0.96) but lower sensitivity (0.45-0.55) for detecting osseous resorption. Conclusions: Osseous resorption of the flexor surface of the distal phalanx can be observed both on MR and radiographic examinations of horses with lameness localised to the foot. This lesion is most often associated with other pathological changes in the podotrochlear apparatus. Conclusions: Focal radiolucency of the flexor surface of the distal phalanx is a newly recognised radiographic sign associated with pathological changes of the podotrochlear apparatus.
Publication Date: 2013-03-02 PubMed ID: 23447869DOI: 10.1111/j.2042-3306.2012.00675.xGoogle Scholar: Lookup
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- Journal Article
- Anatomy
- Bones
- Clinical Findings
- Clinical Pathology
- Deep Digital Flexor Tendon
- Diagnosis
- Diagnostic Imaging
- Diagnostic Technique
- Disease Diagnosis
- Distal Phalanx
- Equine Health
- Horses
- Imaging Techniques
- Lameness
- Magnetic Resonance Imaging
- Navicular Bone
- Radiology
- Veterinary Medicine
- Veterinary Procedure
- Veterinary Research
Summary
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The research article is about a study on horses, where the prevalence and characteristics of osseous resorption of the flexor surface of the distal phalanx were identified by using magnetic resonance imaging (MRI) and radiography. The study also aimed to find any associated lesions and determine the correlation between MRI and radiographic findings.
Methodology
- The horses included in the study had undergone an MRI and radiographs of their distal extremity within a two-week gap.
- Both MRI and radiographs were independently assessed to discover any cases of osseous resorption of the flexor surface of the distal phalanx.
- MRI, considered as the gold standard, was used to calculate the sensitivity and specificity of radiography in detecting osseous resorption.
Results
- Out of the 82 MRI studies that met the inclusion criteria, 8 documented osseous resorption of the distal phalanx’s flexor surface.
- The findings commonly indicated simultaneous injury to the deep digital flexor tendon and the navicular bone.
- An association was recognized between the grades of MRI and radiographic assessments.
- While radiography had high specificity (0.96), indicating a high likelihood of correctly identifying a positive case, it showed lower sensitivity (0.45-0.55), signifying a lower chance of correctly identifying a negative case.
Conclusions
- The study concluded that osseous resorption of the distal phalanx’s flexor surface in horses can be observed in both MRI and radiographic examinations for horses with foot localized lameness.
- This lesion was frequently accompanied by other pathological changes in horses, particularly in the podotrochlear apparatus, a part of their anatomy connected to movement and cushioning.
- Finally, the study recognized a new radiographic sign, focal radiolucency of the flexor surface of the distal phalanx, associated with pathological changes in the podotrochlear apparatus.
Cite This Article
APA
Young AC, Dimock AN, Puchalski SM, Murphy B, Spriet M.
(2013).
Magnetic resonance and radiographic diagnosis of osseous resorption of the flexor surface of the distal phalanx in the horse.
Equine Vet J Suppl(43), 3-7.
https://doi.org/10.1111/j.2042-3306.2012.00675.x Publication
Researcher Affiliations
- Pritchard Veterinary Medical Teaching Hospital, University of California, Davis, California, USA.
MeSH Terms
- Animals
- Bone Resorption / diagnostic imaging
- Bone Resorption / pathology
- Bone Resorption / veterinary
- Horse Diseases / diagnosis
- Horse Diseases / diagnostic imaging
- Horse Diseases / pathology
- Horses
- Lameness, Animal / diagnosis
- Magnetic Resonance Imaging / veterinary
- Radiography
- Retrospective Studies
Citations
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