Laboratory of Veterinary Emergency Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
Veterinary Medical Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
Vet Comp Orthop Traumatol. 2023 Nov;36(6):294-301. doi: 10.1055/s-0043-1770902. Epub 2023 Jul 24.
The aim of this study was to examine a method for measuring femoral trochlear morphology in dogs using ultrasonography, and survey femoral trochlear morphology in skeletally normal dogs.
To examine the validity of ultrasonography, three raters measured the sulcus angle (SA; the angle between the medial and lateral facets) five times in five skeletally normal dogs. Intra- and interrater reliabilities were then calculated. We also calculated the correlation coefficient between SAs measured using ultrasonography and computed tomography (CT) or magnetic resonance imaging (MRI). Then, we surveyed the femoral trochlear morphology in skeletally normal dogs using ultrasonography.
The intra- and interrater reliability for SAs measured using ultrasonography was good, and the correlation coefficient between SAs measured using ultrasonography and CT, or MRI, was strong. In skeletally normal dogs, the SAs for osseous contours decreased until 6 months of age. However, the SAs for cartilaginous contours did not change during the growth period.
The ultrasonographic measurement method is reliable for the evaluation of femoral trochlear morphology in dogs. The contour of the articular cartilage surface of the femoral trochlea is already determined early in life, and ossification of the articular cartilage of the femoral trochlea proceeds until 6 months of age. The results of this study will provide crucial information for the evaluation of femoral trochlear morphology in dogs.
本研究旨在探讨一种使用超声测量犬股骨滑车形态的方法，并调查骨骼正常犬的股骨滑车形态。
为了检验超声检查的有效性，三位评估者在五具骨骼正常的犬中五次测量滑车沟角（SA；内侧和外侧关节面之间的角度）。然后计算了内部和外部评估者的可靠性。我们还计算了超声和计算机断层扫描（CT）或磁共振成像（MRI）测量的 SA 之间的相关系数。然后，我们使用超声检查调查了骨骼正常犬的股骨滑车形态。
使用超声测量的 SA 的内部和外部评估者可靠性良好，超声和 CT 或 MRI 测量的 SA 之间的相关系数很强。在骨骼正常的犬中，骨轮廓的 SA 直到 6 个月大时才减小。然而，在生长期间，软骨轮廓的 SA 没有变化。
超声测量方法可可靠地评估犬的股骨滑车形态。股骨滑车关节软骨表面的轮廓在生命早期就已确定，并且股骨滑车的关节软骨的骨化一直持续到 6 个月大。本研究的结果将为评估犬的股骨滑车形态提供重要信息。
