MacKinnon M C, Bonder D, Boston R C, Ross M W
Milton Equine Hospital, Campbellville, Ontario, Canada.
Equine Vet J. 2015 May;47(3):296-301. doi: 10.1111/evj.12285. Epub 2014 Jun 11.
There is limited information regarding the impact of training track surface on the occurrence of stress fractures.
To evaluate the impact of training track surface on the proportion of long bone and pelvic stress fractures associated with lameness in Thoroughbred horses in flat race training undergoing nuclear scintigraphic examination.
Retrospective study.
Scintigraphic examinations of Thoroughbred flat racehorses were evaluated from 2 hospitals (hospital A [Toronto Equine Hospital], 2003-2009, and hospital B [George D. Widener Hospital for Large Animals, School of Veterinary Medicine, University of Pennsylvania], 1994-2006). Horses admitted to hospital A trained at a single track, at which the main training surface changed from dirt to synthetic on 27 August 2006. Two distinct populations existed at hospital B: horses that trained on dirt (numerous trainers) and those that trained on turf (single trainer). All scintigraphic images were evaluated by a blinded reviewer. Fisher's exact test and logistic regression were used when appropriate, and significance was set at P<0.05.
When reviewing 528 scintigraphic examinations from hospital A (257 dirt and 271 synthetic, numerous trainers), there was a greater proportion of stress fractures detected in scintigraphic examinations from horses training on a synthetic surface (31.7%) in comparison to scintigraphic examinations from horses training on a dirt surface (23.0%) at an earlier point in time (P = 0.03). There was a greater proportion of hindlimb/pelvic and tibial stress fractures diagnosed in horses from the synthetic surface-trained group than from the dirt-trained group at hospital A (P<0.04 and P = 0.03, respectively).
This study provides evidence that training surface may affect the proportion of stress fractures diagnosed, but other factors, such as training philosophy, appear to be important. Future prospective investigations to fully elucidate the relationship between training track surface and the proportion of stress fractures and other nonfatal musculoskeletal injuries are warranted.
关于训练跑道地面状况对应力性骨折发生率的影响，相关信息有限。
评估在接受核素闪烁扫描检查的纯种赛马平地赛跑训练中，训练跑道地面状况对与跛行相关的长骨和骨盆应力性骨折比例的影响。
回顾性研究。
对来自两家医院（医院A[多伦多马医院]，2003 - 2009年；医院B[宾夕法尼亚大学兽医学院大型动物乔治·D·维德纳医院]，1994 - 2006年）的纯种赛马进行闪烁扫描检查评估。入住医院A的马匹在单一跑道训练，该跑道的主要训练地面于2006年8月27日从泥土变为合成材料。医院B存在两个不同的群体：在泥土上训练的马匹（众多训练师）和在草皮上训练的马匹（单一训练师）。所有闪烁扫描图像均由一位不知情的评审员进行评估。在适当情况下使用Fisher精确检验和逻辑回归，显著性设定为P<0.05。
在回顾医院A的528次闪烁扫描检查（257次在泥土地面，271次在合成材料地面，众多训练师）时，与在泥土地面训练的马匹的闪烁扫描检查相比，在合成材料地面训练的马匹的闪烁扫描检查中检测到的应力性骨折比例更高（31.7%对23.0%），且时间更早（P = 0.03）。在医院A，合成材料地面训练组的马匹被诊断出的后肢/骨盆和胫骨应力性骨折比例高于泥土地面训练组（分别为P<0.04和P = 0.03）。
本研究提供了证据表明训练地面可能会影响诊断出的应力性骨折比例，但其他因素，如训练理念，似乎也很重要。有必要进行未来的前瞻性研究，以充分阐明训练跑道地面与应力性骨折比例以及其他非致命性肌肉骨骼损伤之间的关系。
