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The Anatomy of the Glenoid Labrum: A Comparison between Human and Dog.

机译：关节盂唇的解剖：人与狗之间的比较。

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摘要

The anatomy of the glenohumeral joint in humans is characterized by static and dynamic stabilizing structures. In particular the glenoid labrum (GL), the proximal attachment of the joint capsule and the lateral glenohumeral ligament, is an important passive stabilizer in the human shoulder. Although canine animal models are used frequently to investigate the complex biomechanics of the shoulder, few data regarding the microstructure of the canine GL are available. In this study, the anatomy of the canine GL and related structures (n = 20) was investigated and compared with the human anatomic situation (n = 36). In both human and beagle joints, the GL consisted of 3 zonesthe transition zone, shifting zone, and meniscoid fold, but not all 3 zones were present in all joint segments from canine joints. In particular the peripheral parts of the GL showed rich vascularization in both species. The height and width of the GL in the histologic specimens indicated that the GL is of less importance as a passive stabilizer in dogs. Additional differences between the human and canine CL include the joint ligaments, tendons of the shoulder joint, and lack of rotator cuff. The structural and biomechanical characteristics of the joints of quadrupedal animals raise the question of their appropriateness for shoulder research.
机译：人体肱肱关节的解剖结构具有静态和动态稳定结构。特别是关节盂的近端附着和盂肱肱韧带的盂唇（GL）是人肩上的重要被动稳定器。尽管经常使用犬类动物模型来研究肩部的复杂生物力学，但有关犬类GL微观结构的数据很少。在这项研究中，对犬GL及其相关结构（n = 20）的解剖结构进行了研究，并将其与人体解剖情况（n = 36）进行了比较。在人和比格犬关节中，GL由3个区域组成：过渡区，转移区和粘液性折叠，但并非所有3个区都存在于犬关节的所有关节节段中。特别地，GL的外围部分在两个物种中均显示出丰富的血管形成。组织学样本中GL的高度和宽度表明，GL在狗中作为被动稳定剂的重要性较小。人与犬CL之间的其他差异包括关节韧带，肩关节的肌腱和缺少肩袖。四足动物关节的结构和生物力学特征提出了它们是否适合肩膀研究的问题。

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