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首页> 外文期刊>Pferdeheilkunde >The suspensory apparatus of the coffin bone - Part 1: The fan-shaped re-inforcement of the suspensory apparatus at the tip of the coffin bone in the horse.
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The suspensory apparatus of the coffin bone - Part 1: The fan-shaped re-inforcement of the suspensory apparatus at the tip of the coffin bone in the horse.

机译：棺材骨的悬吊装置-第1部分：马匹中棺材骨的尖端的悬吊装置的扇形加固。

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摘要

The suspensory apparatus of the coffin bone with particular regard to its fan-shaped reinforcement at the tip of the coffin bone was examined for the first time. The aim of the study was to reveal structural and functional peculiarities within the different areas of this suspension device. The collected specimens from 11 Warmblooded horses of median height with healthy hooves were investigated using serial plastinated sections and immunohistochemistry of histological sections for detection of alpha -smooth-muscle actin. Results revealed that the fan-shaped reinforcement could be subdivided into three different parts. The upper part of the fan-formation emerged continually from the main part of the suspensory apparatus and was characterized by a gradual flattening of the direction of the trajectories of its supportive elements. The middle part with its horizontal direction was characterized by the loss of the dermal and epidermal secondary lamellae, and thus, by loss of the dermoepidermal interlamellary bond as well as the stick-slip effect. The lower part displayed an increasingly gradient direction of the dermal trajectories that were anchored within the horn of the white line. alpha -smooth-muscle-immunoreactive fibroblasts within the dermal trajectories were detected that presumably enable a self-equilibrating stress of the distal part of the fan-shaped re-enforcement of the suspensory apparatus of the coffin bone. The discussion reveals that the supportive function of the main part of the suspensory apparatus of the coffin bone within the fan-shaped reinforcement was distally superseded by another function such as indirectly anchoring the deep digital flexor tendon within the horn of the white line. This acts as a bracing device for the linea alba, as displayed by the stretched course of the radially directed cross sections of the cornified lamellae. This bracing effect was lost in the palmar and plantar aspect of the hoof because the tension of the deep digital flexor tendon here was not effective, as displayed by the undulated direction of the cross sections of the cornified lamellae of the white line within quarter and heels of the hoof. The clinical-functional application of the fan-shaped reinforcement of the suspensory apparatus of the coffin bone is considered in part 2 of this study.
机译：首次检查了棺材悬置装置，特别是针对棺材尖端处的扇形加强件。该研究的目的是揭示该悬架装置不同区域内的结构和功能特性。使用连续塑化切片和组织学切片的免疫组织化学方法检测11头中等身高的暖血马的标本，并进行组织学切片的免疫组织化学检测α-平滑肌肌动蛋白。结果表明，扇形钢筋可以分为三个不同的部分。扇形的上部从悬架设备的主体连续出现，其特征是其支撑元件的轨迹方向逐渐变平。具有水平方向的中间部分的特征在于真皮和表皮的次生薄片的损失，因此，真皮表皮间的层间粘结的损失以及粘滑作用。下部显示锚定在白线角内的真皮轨迹的渐变方向。检测到真皮轨迹内的α-平滑肌免疫反应性成纤维细胞可能使棺材骨悬吊装置的扇形增强远端的自平衡应力得以实现。讨论表明，棺材骨悬吊装置的主要部分在扇形加强物中的支撑功能已在远端被另一种功能取代，例如将深指屈肌腱间接锚固在白线角内。如通过角质层的径向指向的横截面的拉伸过程所显示的那样，这用作白线的支撑装置。由于深指屈肌腱的张力在这里无效，因此在蹄的掌侧和足底方面失去了支撑作用，如四分之一和后跟内的白线角质化薄片的横截面的起伏方向所示。蹄的。这项研究的第2部分考虑了棺材骨悬吊装置的扇形加强件的临床功能应用。

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