Goulburn Valley Equine Hospital, Congupna, Victoria 3633, Australia.
Equine Vet J. 2010 Oct;42(7):586-90. doi: 10.1111/j.2042-3306.2010.00071.x. Epub 2010 Jun 28.
The effectiveness and best method to manage dorsal cortical stress fractures is not clear. This study was performed to evaluate the success of lag screw fixation of such fractures in a population of Thoroughbred racehorses.
Lag screw fixation of dorsal cortical stress fractures is an effective surgical procedure allowing racehorses to return to their preoperative level of performance.
The records of 116 racehorses (103 Thoroughbreds) admitted to Equine Medical Centre, California between 1986 and 2008 were assessed. Information obtained from medical records included subject details, limb(s) affected, fracture configuration, length of screw used in repair and presence of concurrent surgical procedures performed. Racing performance was evaluated relative to these factors using Fisher's exact test and nonparametric methods with a level of significance of P<0.05.
Of 92 Thoroughbred horses, 83% raced preoperatively and 83% raced post operatively, with 63% having ≥5 starts. There was no statistically significant association between age, gender, limb affected, fracture configuration or presence of concurrent surgery and likelihood of racing post operatively or of having 5 or more starts. The mean earnings per start and the performance index for the 3 races following surgery were lower compared to the 3 races prior to surgery; however, 29 and 45% of horses either improved or did not change their earnings per start and performance index, respectively.
Data show that lag screw fixation is successful at restoring ability to race in horses suffering from dorsal cortical stress fractures.
目前对于治疗背侧皮质骨应力性骨折的有效方法和最佳方法尚不清楚。本研究旨在评估在纯种赛马中使用拉力螺钉固定此类骨折的成功率。
拉力螺钉固定背侧皮质骨应力性骨折是一种有效的手术方法，可以使赛马恢复到术前的运动水平。
评估了 1986 年至 2008 年期间加利福尼亚州动物医疗中心收治的 116 匹马（103 匹纯血马）的记录。从病历中获得的信息包括：马的详细信息、受影响的四肢、骨折类型、修复中使用的螺钉长度以及是否同时进行了其他手术。使用 Fisher 确切检验和非参数方法，根据这些因素评估赛马表现，显著性水平为 P<0.05。
在 92 匹纯血马中，83%在术前比赛，83%在术后比赛，63%有≥5 次参赛。赛马术后比赛或有 5 次以上参赛的可能性与年龄、性别、受影响的四肢、骨折类型或是否同时进行手术之间没有统计学上的显著关联。手术后的平均每场比赛收入和比赛表现指数均低于手术前的 3 场比赛；然而，分别有 29%和 45%的马在每场比赛的收入和比赛表现指数上有所提高或没有变化。
数据表明，拉力螺钉固定术可成功恢复患有背侧皮质骨应力性骨折的赛马的比赛能力。
