Segami N, Fujimura K, Murakami K, Matsuki M, Miyaki K, Yokoe Y, Iizuka T
Nihon Ago Kansetsu Gakkai Zasshi. 1989;1(1):172-82.
The authors examined arthrotomographies of 89 patients (96 joints) with closed lock of the temporomandibular joint to clarify the frequency of disk deformity correlated with disk perforation, bone change and patients' age. The disk configurations were divided into 3 types, those were type-1-elongated and preserved shape of the disk, 39 joints, type 2-folded disk, 11 joints, and type 3-massed disk, 46 joints. The frequency of disk deformity was 66.7% (64 joints). The numbers of disk perforation, (and bone change) in each type were type 1-2 (5) joints, type 2-1 (1) joint, and type 3-11 (13) joints. The average ages of each type were type 1-28.1 years, type-2-27.2 years, and type 3-40.1 years. These results indicate that high percentage of disk deformations exist in the closed lock patients with degenerative changes of the soft and hard parts of the temporomandibular joint.
作者检查了89例（96个关节）颞下颌关节闭锁患者的关节体层摄影，以明确与关节盘穿孔、骨质改变及患者年龄相关的关节盘变形频率。关节盘形态分为3种类型：1型——关节盘伸长且形态保留，共39个关节；2型——关节盘折叠，共11个关节；3型——关节盘聚集，共46个关节。关节盘变形的频率为66.7%（64个关节）。各类型中关节盘穿孔（及骨质改变）的数量分别为：1型——2（5）个关节；2型——1（1）个关节；3型——11（13）个关节。各类型的平均年龄分别为：1型——28.1岁；2型——27.2岁；3型——40.1岁。这些结果表明，颞下颌关节软硬组织发生退行性改变的闭锁患者中存在较高比例的关节盘变形。
