Chesen A Berkley, Dabareiner Robin M, Chaffin M Keith, Carter G Kent
Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Science, Texas A&M University, College Station, TX 77843, USA.
J Am Vet Med Assoc. 2009 Jun 1;234(11):1432-6. doi: 10.2460/javma.234.11.1432.
To determine clinical signs, ultrasonographic findings, and outcome of horses with tendinitis of the proximal portion of the superficial digital flexor tendon (SDFT; group A horses) and to compare signalment, horse use, and outcome in these horses with that of horses with tendinitis of the midmetacarpal region of the SDFT (group B horses).
Retrospective case series.
12 group A horses and 22 group B horses.
Medical records were reviewed for signalment, horse use, and outcome information; data for group A horses also included severity of lameness, diagnostic results, and treatment.
Most group A horses were aged (mean, 18 years; median, 17 years; range, 11 to 23 years) Quarter Horses (9/12 horses) and had a grade 3 or 4 (on a scale from 1 to 5) forelimb lameness. Most group A horses (8/12 horses) had positive reactions to carpal flexion and were (9/12 horses) sound following ulnar nerve blocks. Ultrasonographic evaluation revealed hypoechoic SDFT lesions (median echogenicity score, 3/4; median fiber alignment score, 3/3; and mean length, 9.75 cm). Group A horses were significantly older and had a poorer outcome for return to previous use (2/12 horses), compared with group B horses (median age, 5 years; 10/22 horses returned to previous use). Thirteen of 22 group B horses were Thoroughbreds.
Tendinitis of the proximal portion of the SDFT was a cause of lameness in aged performance horses; prognosis for return to previous use was poor.
确定患有指浅屈肌腱（SDFT）近端腱鞘炎的马匹的临床体征、超声检查结果及预后，并将这些马匹与患有SDFT掌中部腱鞘炎的马匹（B组马匹）在特征、用途及预后方面进行比较。
回顾性病例系列研究。
12匹A组马匹和22匹B组马匹。
查阅病历以获取特征、马匹用途及预后信息；A组马匹的数据还包括跛行严重程度、诊断结果及治疗情况。
大多数A组马匹为老龄（平均18岁；中位数为17岁；范围为11至23岁）的四分之一马（9/12匹马），前肢跛行程度为3级或4级（1至5级评分）。大多数A组马匹（8/12匹马）腕关节屈曲试验呈阳性反应，且在尺神经阻滞术后恢复正常（9/12匹马）。超声检查显示SDFT出现低回声病变（回声性中位数评分，3/4；纤维排列中位数评分，3/3；平均长度，9.75厘米）。与B组马匹（中位数年龄，5岁；10/22匹马恢复至先前用途）相比，A组马匹年龄显著更大，恢复至先前用途可能性更小（2/12匹马）。22匹B组马匹中有13匹为纯种马。
SDFT近端腱鞘炎是老龄竞技马匹跛行的一个病因；恢复至先前用途的预后较差。
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