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Changes in mineralised tissue at the site of origin of condylar fracture are present before athletic training in Thoroughbred horses.
N Z Vet J. 2009 Oct; 57(5):278-83.NZ

Abstract

AIM

To show that changes are present at the site of origin of metacarpal condylar fracture in young Thoroughbred horses before they enter race training.

METHOD

Bone slices, 2 mm thick, in three mediolateral planes through the centre of rotation of the metacarpo-phalangeal joint (MCPJ) of both distal third metacarpal bones (Mc3) of 12 Thoroughbred horses aged 17 months, were imaged using point-projection digital X-ray imaging (muXR).

RESULTS

In some horses, linear or ovoid radiolucency was found in articular calcified cartilage (ACC) and subchondral bone of the palmaro-distal aspect of the sagittal groove, exactly at the site of more advanced stages of condylar fatigue fracture. An incidental finding was ovoid radiolucency in the apex of the dorso-distal aspect of the sagittal ridge, with or without fragmentation or disturbance of the subchondral mineralised tissue line, resembling equine osteochondrosis.

CONCLUSIONS AND CLINICAL RELEVANCE

The findings imply that the aetiology of condylar fatigue fracture in young Thoroughbred horses includes abnormality in development of the bone and joint that is present before athletic activity occurs.

Authors+Show Affiliations

National Research Centre for Growth and Development, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand. e.c.firth@massey.ac.nzNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19802041

Citation

Firth, E C., et al. "Changes in Mineralised Tissue at the Site of Origin of Condylar Fracture Are Present Before Athletic Training in Thoroughbred Horses." New Zealand Veterinary Journal, vol. 57, no. 5, 2009, pp. 278-83.
Firth EC, Doube M, Boyde A. Changes in mineralised tissue at the site of origin of condylar fracture are present before athletic training in Thoroughbred horses. N Z Vet J. 2009;57(5):278-83.
Firth, E. C., Doube, M., & Boyde, A. (2009). Changes in mineralised tissue at the site of origin of condylar fracture are present before athletic training in Thoroughbred horses. New Zealand Veterinary Journal, 57(5), 278-83. https://doi.org/10.1080/00480169.2009.58621
Firth EC, Doube M, Boyde A. Changes in Mineralised Tissue at the Site of Origin of Condylar Fracture Are Present Before Athletic Training in Thoroughbred Horses. N Z Vet J. 2009;57(5):278-83. PubMed PMID: 19802041.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Changes in mineralised tissue at the site of origin of condylar fracture are present before athletic training in Thoroughbred horses. AU - Firth,E C, AU - Doube,M, AU - Boyde,A, PY - 2009/10/6/entrez PY - 2009/10/6/pubmed PY - 2010/1/6/medline SP - 278 EP - 83 JF - New Zealand veterinary journal JO - N Z Vet J VL - 57 IS - 5 N2 - AIM: To show that changes are present at the site of origin of metacarpal condylar fracture in young Thoroughbred horses before they enter race training. METHOD: Bone slices, 2 mm thick, in three mediolateral planes through the centre of rotation of the metacarpo-phalangeal joint (MCPJ) of both distal third metacarpal bones (Mc3) of 12 Thoroughbred horses aged 17 months, were imaged using point-projection digital X-ray imaging (muXR). RESULTS: In some horses, linear or ovoid radiolucency was found in articular calcified cartilage (ACC) and subchondral bone of the palmaro-distal aspect of the sagittal groove, exactly at the site of more advanced stages of condylar fatigue fracture. An incidental finding was ovoid radiolucency in the apex of the dorso-distal aspect of the sagittal ridge, with or without fragmentation or disturbance of the subchondral mineralised tissue line, resembling equine osteochondrosis. CONCLUSIONS AND CLINICAL RELEVANCE: The findings imply that the aetiology of condylar fatigue fracture in young Thoroughbred horses includes abnormality in development of the bone and joint that is present before athletic activity occurs. SN - 0048-0169 UR - https://www.unboundmedicine.com/medline/citation/19802041/Changes_in_mineralised_tissue_at_the_site_of_origin_of_condylar_fracture_are_present_before_athletic_training_in_Thoroughbred_horses_ L2 - http://www.tandfonline.com/doi/full/10.1080/00480169.2009.58621 DB - PRIME DP - Unbound Medicine ER -