Kofler J, Kübber P
Universitätsklinik für Orthopädie bei Huf- und Klauentieren, Veterinärmedizinische Universität Wien.
Berl Munch Tierarztl Wochenschr. 2000 Mar;113(3):81-7.
Ultrasonographic thickness measurement and imaging of sole horn and the encapsulated soft tissue layers was evaluated in 100 bovine claw specimens. The claws were trimmed and examined in longitudinal planes using a 7.5 MHz linear transducer. In each claw, ultrasonographic measurements of horn thickness of sole and distance from outer claw surface to distal phalanx surface were made at three marked points on the weightbearing surface. All claws were then frozen, transected and anatomical reference measurements were made after thawing. The sole horn, corium, subcutis and distal surface of the distal phalanx of all claws were clearly visualized. The sole horn had a heterogeneous hypoechoic appearance, the underlying soft tissue layer was predominantly anechoic. Corium and subcutis could be differentiated. Best imaging of these structures was achieved in claws with less than 10 mm sole horn thickness and soft sole horn. Statistical correlation coefficients of 0.88 to 0.91 were found for ultrasonographic and anatomical measurements of sole horn thickness. Therefore, B-mode ultrasonography proved to be an accurate, non-invasive technique for measurement of the sole horn thickness in bovine claws.
在100个牛蹄标本中评估了蹄底角质及包裹的软组织层的超声厚度测量和成像。使用7.5MHz线性换能器对蹄子进行修剪并在纵切面进行检查。在每个蹄子的负重面上的三个标记点进行蹄底角质厚度的超声测量以及从蹄外表面到远节趾骨表面的距离测量。然后将所有蹄子冷冻、横切，解冻后进行解剖学参考测量。所有蹄子的蹄底角质、真皮、皮下组织和远节趾骨的远端面均清晰可见。蹄底角质呈不均匀低回声外观，其下方的软组织层主要为无回声。真皮和皮下组织可以区分。在蹄底角质厚度小于10mm且蹄底角质较软的蹄子中，这些结构的成像效果最佳。蹄底角质厚度的超声测量和解剖学测量的统计相关系数为0.88至0.91。因此，B型超声检查被证明是一种准确、无创的测量牛蹄蹄底角质厚度的技术。
