| Detection of Articular Pathology of the Distal Aspect of the Third Metacarpal Bone in Thoroughbred Racehorses: Comparison of Radiography, Computed Tomography and Magnetic Resonance Imaging. | |
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MedLine Citation:
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PMID: 22092025 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVE: To compare digital radiography (DR), computed tomography (CT), and magnetic resonance imaging (MRI) for detection of pathology of the distal aspect of the third metacarpal bone (MC3) and to assess whether arthrography would improve detection of articular cartilage or subchondral bone cracking. STUDY DESIGN: Cross-sectional study. SAMPLE POPULATION: Limb specimens from 17 Thoroughbred horses after catastrophic injury and 4 age-matched control horses. METHODS: Standard DR, CT, and MRI images of the metacarpophalangeal joint were acquired before and after iohexol injection. Pathologic features detected with imaging and on visual inspection of cartilage and subchondral bone of the distal aspect of MC3 were graded. Imaging observations were compared with pathologic abnormalities. RESULTS: Inspection revealed obvious changes in the cartilage and subchondral bone surfaces in Thoroughbreds. Both CT and MRI were superior to DR for detection of subchondral bone pathology. Cracking of cartilage was not detected by any imaging modality. Signal changes associated with cartilage loss and development of repair tissue were evident on MRI in 9/19 cases. There was significant correlation (P < .05) between subchondral bone pathology detected on both CT and MRI, and cartilage pathology on gross examination. Contrast arthrography did not improve the detection of articular cartilage or subchondral plate cracking. CONCLUSION: Both CT and MRI are superior to DR for detection of subchondral bone pathology, but underestimate the extent of joint adaptation and pathologic damage. MRI was able to detect cartilage degeneration. |
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Authors:
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Thomas O'Brien; Theresa A Baker; Sabrina H Brounts; Susannah J Sample; Mark D Markel; Mary C Scollay; Patricia Marquis; Peter Muir |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-31 |
Journal Detail:
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Title: Veterinary surgery : VS Volume: - ISSN: 1532-950X ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-11-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8113214 Medline TA: Vet Surg Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© Copyright 2011 by The American College of Veterinary Surgeons. |
Affiliation:
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Comparative Orthopaedic Research Laboratory and the Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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