Histopathologic features of distal tarsal joint cartilage and subchondral bone in ridden and pasture-exercised horses

Tranquille, C.A., Dyson, S.J., Blunden, A.S., Collins, S.N., Parkin, T.D.H. , Goodship, A.E. and Murray, R.C. (2011) Histopathologic features of distal tarsal joint cartilage and subchondral bone in ridden and pasture-exercised horses. American Journal of Veterinary Research, 72(1), pp. 33-41. (doi:10.2460/ajvr.72.1.33)

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Publisher's URL: http://dx.doi.org/10.2460/ajvr.72.1.33

Abstract

Objective-To determine whether histopathologic characteristics of the osteochondral unite of equine distal tarsal joints were associated with exercise history in horses without lameness Sample Population-30 cadaver tarsi from horses without lameness and with known exercise history were separated into 3 groups nonridden pasture exercise (group P) low-intensity ridden exercise (group L) and high intensity elite competition exercise (group E) Procedures-Standardized sites from the centrodistal and tarsometatarsal joints underwent histologic preparation A grading system was adapted to describe location depth and shape of lesions cellular arrangement organization at cartilage and subchondral bone (SOB) junctions and organization of SCB A high score signified a more severe pathological change than a low score Exercise groups were compared by calculation of Spearman rank correlations Results-In the centrodistal Joint lesions were present in groups L and E but only medially Cellular arrangement scores were higher at the dorsomedial location in group P than in groups L and E Groups L and E had higher scores than group P for the organization of the cartilage SCB junctions and SCB with higher scores at the dorsomedial location In the tarsometatarsal joint lesions were evident across the whole Joint surface with more severe lesions located laterally in all 3 groups Overall group E had higher scores for cellular arrangement and SOB organization than groups P and L Conclusions and Clinical Relevance-Ridden exercise may increase the risk of osteochondral lesions at distal tarsal sites predisposed to osteoarthritis relative to the risk with non ridden exercise (Am J Vet Res 2011 72 33-41)

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Parkin, Professor Timothy
Authors: Tranquille, C.A., Dyson, S.J., Blunden, A.S., Collins, S.N., Parkin, T.D.H., Goodship, A.E., and Murray, R.C.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:American Journal of Veterinary Research
ISSN:0002-9645

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