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Radiological, vascular osteochondrosis occurs in the distal tarsus, and may cause osteoarthritis

Sigurdsson, Sigurdur F. and Olstad, Kristin and Ley, Charles and Björnsdóttir, Sigriður and Griffiths, David J. and Fjordbakk, Cathrine T. (2021). Radiological, vascular osteochondrosis occurs in the distal tarsus, and may cause osteoarthritis. Equine Veterinary Journal. 54 , 82-96
[Research article]

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Abstract

Background Osteochondrosis occurs due to failure of the blood supply to growth cartilage. Osteochondrosis lesions have been identified in small tarsal bones and suggested to cause distal tarsal osteoarthritis; however, it has not been determined whether distal tarsal osteochondrosis lesions were the result of vascular failure.Objectives To perform post-mortem arterial perfusion and micro-computed tomography (CT) of the central (CTB) and third tarsal bones (TIII) of fetuses and foals up to 5 months old, to describe tarsal development and any lesions detected.Study design Descriptive, nonconsecutive case series.Methods Twenty-three animals that died or were euthanased from 228 days of gestation to 5 months old were collected, comprising two fetuses and nine foals of miscellaneous breeds and 12 Icelandic Horse foals, a breed with high prevalence of distal tarsal osteoarthritis. One hindlimb from each foal was perfused arterially with barium, and the CTB and TIII were examined with micro-CT.Results Perfusion yielded partial information from 41% of the animals. The CTB and TIII were supplied by nutrient arteries and perichondrial vessels with vertical, transverse and circumferential configurations. Fourteen of the 23 (61%) animals had focal defects in the ossification front, that is, radiological osteochondrosis. The majority of lesions matched the configuration and development of vertical vessels. Additionally, full-thickness, cylindrical defects matched transverse vessels, and the long axes of some dorsal lesions matched circumferential vessels.Main limitations Lack of histological validation.Conclusions Post-mortem perfusion was poor for examination of the blood supply to the growth cartilage of the CTB and TIII. Radiological osteochondrosis lesions were compatible with vascular failure because they were focal, and because lesion geometry matched vessel configuration. The relationship between osteochondrosis and distal tarsal osteoarthritis warrants further investigation.

Authors/Creators:Sigurdsson, Sigurdur F. and Olstad, Kristin and Ley, Charles and Björnsdóttir, Sigriður and Griffiths, David J. and Fjordbakk, Cathrine T.
Title:Radiological, vascular osteochondrosis occurs in the distal tarsus, and may cause osteoarthritis
Series Name/Journal:Equine Veterinary Journal
Year of publishing :2021
Volume:54
Page range:82-96
Number of Pages:15
Publisher:WILEY
ISSN:0425-1644
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
Keywords:horse, cartilage canal blood supply, distal tarsal osteoarthritis, foal, growth cartilage, osteochondrosis, vascular failure
URN:NBN:urn:nbn:se:slu:epsilon-p-111511
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111511
Additional ID:
Type of IDID
DOI10.1111/evj.13432
Web of Science (WoS)000626542200001
ID Code:26345
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Clinical Sciences
Deposited By: SLUpub Connector
Deposited On:20 Dec 2021 07:25
Metadata Last Modified:20 Dec 2021 07:31

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