Wajima K, Sannta M, Yazaki A, Ikawa M, Sumii Y, Kogai H, Suzuki A, Nakagawa H, Nomoto T
Nihon Ago Kansetsu Gakkai Zasshi. 1989;1(1):139-50.
Internal derangement of temporomandibular joint has been studied mainly arthrographically about disk position, but it was reported that morphologic alterations and histo-chemical changes of disk were frequently observed in joints with internal derangement. The aim of this investigation was to study the relationship between deformity of disk and the kind of internal derangement of TMJ (anterior disk displacement with or without reduction). We analysed arthrographically the configuration of anterior displaced disk according to the criteria of Westesson. Deformity of disk was seen in 35 joints in 60 joints (58.3%) associated with anterior disk displacement with reduction, and 51 joints in 66 joints (77.3%) without reduction. Statistically significant difference existed between the distribution of disk configuration in with-reduction and without-reduction. We analysed the relationship between distribution of disk configuration and age, clicking period and locking period. In cases long suffering from clicking and locking, no-deformed disk were seen, and any certain type of deformed disk did not increase. From above results it was suggested that there was a strong relationship between distribution of disk configulation and types of anterior disk displacement (with or without reduction).
颞下颌关节内紊乱主要通过关节造影研究盘的位置，但有报道称，在颞下颌关节内紊乱的关节中经常观察到盘的形态改变和组织化学变化。本研究的目的是探讨盘畸形与颞下颌关节内紊乱类型（盘前移位伴或不伴复位）之间的关系。我们根据韦斯特松的标准对关节造影显示的前移位盘的形态进行了分析。在60个伴有盘前移位伴复位的关节中，有35个关节（58.3%）出现了盘畸形；在66个不伴复位的关节中，有51个关节（77.3%）出现了盘畸形。盘形态分布在伴复位和不伴复位之间存在统计学上的显著差异。我们分析了盘形态分布与年龄、弹响期和绞锁期之间的关系。在长期存在弹响和绞锁的病例中，未见盘变形，且未出现任何特定类型的盘变形增加。从上述结果可以看出，盘形态分布与盘前移位类型（伴或不伴复位）之间存在密切关系。
