Shengyi T, Xu Y
Department of Oral Anatomy and Physiology, Craniomandibular Disorders Clinic College of Stomatology, West China University of Medical Sciences, Chengdu.
J Craniomandib Disord. 1991 Winter;5(1):28-34.
The present study investigated the gross anatomy and collagen fiber orientation of TMJ discs in dogs using macroscopic, stereomicroscopic, light microscopic, and scanning electron microscopic techniques. Results showed that (1) the surface of the disc has an undulated configuration (a "fingerprint pattern" under stereomicroscope), which appears to aid in storing synovial fluid and providing lubrication to the joint; (2) the fine fibrils in the middle part are twisted together tightly, presenting a wavy, winding, lamina layer structure anteroposteriorly that works to absorb shock; (3) the mediolateral fibers are composed of loose and less wavy bundles, and they are crossed perpendicularly by anteroposterior fibers in anterior and posterior bands. In fact, a fibrous anulus in the periphery of the disc is composed of the mediolateral fibers of anterior and posterior bands and the anteroposterior fibers of the medial and lateral portions of the middle band, which suggests a stabilizing function.
本研究采用宏观、体视显微镜、光学显微镜和扫描电子显微镜技术，对犬颞下颌关节盘的大体解剖结构和胶原纤维取向进行了研究。结果表明：（1）关节盘表面呈波浪状形态（在体视显微镜下为“指纹图案”），这似乎有助于储存滑液并为关节提供润滑；（2）中间部分的细纤维紧密缠绕在一起，在前后方向上呈现出波浪状、蜿蜒的板层结构，起到吸收冲击的作用；（3）内外侧纤维由松散且波浪较少的束组成，在前带和后带中它们与前后纤维垂直交叉。实际上，关节盘周边的纤维环由前带和后带的内外侧纤维以及中间带内侧和外侧部分的前后纤维组成，这表明其具有稳定功能。
