Wink C S, St Onge M, Zimny M L
Department of Anatomy, LSU Medical Center, New Orleans 70112-1393.
J Oral Maxillofac Surg. 1992 Apr;50(4):334-7. doi: 10.1016/0278-2391(92)90391-c.
The purpose of this study was to determine the presence and describe the location of neural elements in the articular disc of the human temporomandibular joint. Six articular discs were obtained from three adult human subjects at autopsy. Four discs were cut into segments of known anterior-posterior orientation. The remaining two were processed intact. All tissues were stained in bulk with gold chloride, and frozen, sectioned on a sliding microtome at 70 to 100 microns, mounted on slides, dehydrated, and coverslipped. Nerve fibers were seen penetrating the discs from the pericapsular connective tissue. Structures resembling Ruffini endings, Pacinian corpuscles, and Golgi tendon organs were identified in the pericapsular connective tissue and within the disc. The population density of neural elements was the greatest at the periphery of the disc and progressively decreased towards the center, which was essentially devoid of them. The concentration of neural elements appeared to be greater at the anterior and posterior margins of the disc, with the greatest concentration being posteriorly. These findings support the theory that afferent nerves may arise from neural elements within the disc.
本研究的目的是确定人类颞下颌关节关节盘中神经成分的存在情况并描述其位置。在尸检时从三名成年人类受试者获取了六个关节盘。四个关节盘被切成具有已知前后方向的节段。其余两个保持完整处理。所有组织用氯化金整体染色，冷冻后在滑动切片机上切成70至100微米厚的切片，安装在载玻片上，脱水并加盖玻片。可见神经纤维从关节囊结缔组织穿透关节盘。在关节囊结缔组织和关节盘内发现了类似鲁菲尼终末、环层小体和高尔基腱器官的结构。神经成分的总体密度在关节盘周边最大，并向中心逐渐降低，中心基本没有神经成分。神经成分的浓度在关节盘的前缘和后缘似乎更高，其中浓度最高的是后缘。这些发现支持传入神经可能起源于关节盘内神经成分的理论。
