Claerhoudt S, Bergman E H J, van der Veen H, Vanderperren K, Raes E V, Saunders J H
Veterinary Medical Imaging and Large Animals Surgery, Faculty of Veterinary Medicine, Ghent University,Salisburylaan 133, 9820 Merelbeke, Belgium.
Anat Histol Embryol. 2011 Feb;40(1):55-60. doi: 10.1111/j.1439-0264.2010.01038.x. Epub 2010 Oct 29.
The morphological features of the distal border synovial invaginations (SI) of the distal sesamoid bone (DSB) in horses were described by the use of computed tomography (CT). Transverse CT images were obtained on 50 cadaver forefeet from 25 Warmblood horses. Dorsal and sagittal planes were reformatted. The CT images allowed the evaluation of the number, shape, depth of penetration and direction of the SI into the bone. The total number of SI was 295 (mean 5.9). The number of invaginations in a particular DSB ranged from 3 (n = 3), 4 (n = 6), 5 (n = 11), 6 (n = 12), 7 (n = 13), 8 (n = 3), 9 (n = 1) to 11 (n = 1). The shape of the SI was 'conical' (n = 118), 'linear' (n = 109), 'lollipop' (n = 38) or 'branched' (n = 30). Penetration of the SI into the DSB was 'mild' in 195 cases, 'moderate' in 67 cases and 'deep' in 33 cases. The SI ran in a 'straight', 'dorsoproximal' and 'palmaroproximal' direction in 187, 28 and 80 cases, respectively. In only six DSBs, all SI ran in the same direction. The images obtained in this study may serve as reference for the radiographic evaluation of these SI.
利用计算机断层扫描（CT）对马远籽骨（DSB）远侧边缘滑膜凹陷（SI）的形态特征进行了描述。从25匹温血马的50个尸体前足获取了横向CT图像，并对其进行了矢状面和冠状面的重组。CT图像可用于评估滑膜凹陷的数量、形状、向骨内的穿透深度及方向。滑膜凹陷的总数为295个（平均5.9个）。单个远籽骨中滑膜凹陷的数量范围为3个（n = 3）、4个（n = 6）、5个（n = 11）、6个（n = 12）、7个（n = 13）、8个（n = 3）、9个（n = 1）至11个（n = 1）。滑膜凹陷的形状为“圆锥形”（n = 118）、“线性”（n = 109）、“棒棒糖形”（n = 38）或“分支形”（n = 30）。滑膜凹陷向远籽骨内的穿透程度为“轻度”的有195例，“中度”的有67例，“深度”的有33例。滑膜凹陷呈“直线”方向的有187例，呈“背近端”方向的有28例，呈“掌近端”方向的有80例。仅在6个远籽骨中，所有滑膜凹陷的方向相同。本研究获得的图像可为这些滑膜凹陷的影像学评估提供参考。
