Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, Alabama.
New Bolton Center, University of Pennsylvania, Kennett Square, Pennsylvania.
Vet Surg. 2021 Apr;50(3):507-516. doi: 10.1111/vsu.13568. Epub 2021 Jan 18.
To determine the influence of clinical osteochondrosis (OC) on the short-term (2, 3, and 4-year-old) and long-term racing performance and longevity of standardbred racehorses.
Retrospective case-control study.
Standardbred racehorses from a single breeding farm born between 2009 and 2017 that survived to racing age (n = 2711). Three hundred eighty-two (14%) horses were OC-affected (829 lesions confirmed arthroscopically during surgical treatment), and 2329 (86%) horses were nonaffected.
Racing performance data were obtained from an online database and evaluated with multiple linear regression models.
Trotters were more likely than pacers to be affected by OC (odds ratio [OR] = 1.4, 95% CI = 1.1-1.9, P = .006). Compared with nonaffected horses, long-term OC-affected horses had 8.8 fewer starts (95% CI = -14.4 to -3.2, P = .002), 1.0 fewer wins (95% CI = -1.9 to -0.1, P = .030), and 3.8 fewer total number of first through third place finishes (95% CI = -6.2 to -1.4, P < .0001). Nonaffected horses had longer careers compared with OC-affected horses, racing 0.32 years longer (95% CI = -0.52 to -0.12, P = .002). Osteochondrosis had no impact on short-term racing performance. Horses with lesions at the distal intermediate ridge of the tibia or lateral trochlear ridge of the talus had decreased performance compared with horses without these lesions.
Pacers were less likely than trotters to be affected by OC. Affected horses had fewer starts and shorter careers, despite early surgical intervention.
Osteochondrosis decreases long-term racing performance in racing standardbreds.
确定临床骨软骨病（OC）对赛驹短期（2、3、4 岁）和长期比赛表现和寿命的影响。
回顾性病例对照研究。
来自同一繁殖场的 2009 年至 2017 年间出生、存活至比赛年龄的标准bred 赛马（n=2711）。382 匹马（14%）患有 OC（829 例在手术治疗中经关节镜证实有病变），2329 匹马（86%）未受影响。
赛马比赛表现数据从在线数据库中获取，并使用多元线性回归模型进行评估。
小跑马比快步马更有可能患有 OC（优势比[OR] = 1.4，95%CI = 1.1-1.9，P =.006）。与未受影响的马匹相比，长期 OC 受影响的马匹起跑次数少 8.8 次（95%CI = -14.4 至 -3.2，P =.002），获胜次数少 1.0 次（95%CI = -1.9 至 -0.1，P =.030），总前三名完成次数少 3.8 次（95%CI = -6.2 至 -1.4，P < .0001）。未受影响的马匹比 OC 受影响的马匹有更长的职业生涯，比赛时长多 0.32 年（95%CI = -0.52 至 -0.12，P =.002）。OC 对短期比赛表现没有影响。胫骨远端中间嵴或距骨外侧滑车嵴有病变的马匹比赛表现低于无病变的马匹。
小跑马比快步马更不容易患 OC。尽管早期进行了手术干预，但受影响的马匹起跑次数较少，职业生涯较短。
OC 降低了赛马的长期比赛表现。
