Claw Horn Disruption Lesions (CHDL) negatively affect the sole soft tissue structures located beneath the sole horn. The aim of the present study was to investigate the effect of CHDL on sole soft tissues by ultrasound means, correlating Body condition score (BCS), locomotion score and CHDL with ultrasonography evaluations of sole soft tissues in Holstein dairy cows. 100 Holstein dairy cows were enrolled in the study. BCS and locomotion score were assessed and functional trimming was performed on all animals. 84 healthy claws and 174 claws with solely one CHDL per claw were evaluated both clinically and with ultrasound, and CHDL were identified and recorded. Sole soft tissues thickness (mm) and echogenicity was determined, and ultrasonographic alterations, related to CHDL presence, where measured long their vertical (L1) and horizontal (L2) axis. Statistically significant (P < .001) differences were found in echogenicity between healthy claws and all the affected ones, with the healthy ones being mainly anechoic. Statistically significant (P < .001) differences were found for vertical (L1) and horizontal (L2) axis measures between the diverse CHDL, confirming ultrasonography as a useful tool to distinguish lesions and their extension by measuring L1 and L2. BCS had an influence both on sole soft tissues ultrasonographic appearance and on CHDL insurgency. These results confirm ultrasonography as a reliable tool for detecting an increase in sole soft tissues echogenicity, that was seen to occur with CHDL insurgency, and in determining lesion extension.

中文翻译：

---

荷斯坦奶牛的牛爪唯一软组织的超声检查改变与羊角角破坏，体况评分和运动评分相关。

羊角角破坏病变（CHDL）对位于足底下方的足底软组织结构产生负面影响。本研究的目的是通过超声手段研究CHDL对唯一软组织的影响，并将其身体状况评分（BCS），运动评分和CHDL与超声检查荷斯坦奶牛唯一软组织的相关性。该研究招募了100头荷斯坦奶牛。评估所有动物的BCS和运动评分并进行功能性修剪。临床和超声检查均评估了84只健康的爪子和174只每只爪子只有一个CHDL的爪子，并识别并记录了CHDL。确定唯一的软组织厚度（mm）和回声性，并与CHDL存在相关的超声改变，在其垂直（L1）和水平（L2）轴上进行测量。在健康的爪子和所有受影响的爪子之间的回声性上发现有统计学意义（P <.001）的差异，而健康的爪子主要是无回声的。在不同的CHDL之间的垂直（L1）和水平（L2）轴测量值上发现了统计学上显着（P <.001）的差异，这证实了超声检查是通过测量L1和L2来区分病变及其扩展的有用工具。BCS对唯一的软组织超声检查外观和CHDL叛乱都有影响。这些结果证实了超声检查是一种可靠的工具，可用于检测唯一的软组织回声性的增加（这是由CHDL叛乱引起的）和确定病变扩展的可靠方法。健康者主要是消声的。在不同的CHDL之间的垂直（L1）和水平（L2）轴测量值上发现了统计学上显着（P <.001）的差异，这证实了超声检查是通过测量L1和L2来区分病变及其扩展的有用工具。BCS对唯一的软组织超声检查外观和CHDL叛乱都有影响。这些结果证实了超声检查是一种可靠的工具，可用于检测唯一的软组织回声性的增加（这是由CHDL叛乱引起的）和确定病变扩展的可靠方法。健康者主要是消声的。在不同的CHDL之间的垂直（L1）和水平（L2）轴测量值上发现了统计学上显着（P <.001）的差异，这证实了超声检查是通过测量L1和L2来区分病变及其扩展的有用工具。BCS对唯一的软组织超声检查外观和CHDL叛乱都有影响。这些结果证实了超声检查是一种可靠的工具，可用于检测唯一的软组织回声性的增加（这是由CHDL叛乱引起的）和确定病变扩展的可靠方法。确认超声检查是通过测量L1和L2来区分病变及其扩展的有用工具。BCS对唯一的软组织超声检查外观和CHDL叛乱都有影响。这些结果证实了超声检查是一种可靠的工具，可用于检测唯一的软组织回声的增加（这被认为与CHDL叛乱有关），并可以确定病变范围。确认超声检查是通过测量L1和L2来区分病变及其扩展的有用工具。BCS对唯一的软组织超声检查外观和CHDL叛乱都有影响。这些结果证实了超声检查是一种可靠的工具，可用于检测唯一的软组织回声的增加（这是由于CHDL叛乱引起的）和确定病变的扩展。