[Arthrographic investigation for the disk configuration with closed lock of the temporomandibular joint].

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01
N Segami, K Fujimura, K Murakami, M Matsuki, K Miyaki, Y Yokoe, T Iizuka
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Abstract

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.

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[颞下颌关节闭锁椎间盘构型的关节造影研究]。
作者检查了89例(96个关节)颞下颌关节闭锁的关节断层摄影,以澄清椎间盘畸形的频率与椎间盘穿孔、骨改变和患者年龄的关系。将关节盘形态分为3种类型,即1型延长型保留关节盘39个关节,2型折叠关节盘11个关节,3型集束关节盘46个关节。椎间盘畸形发生率为66.7%(64个关节)。各类型椎间盘穿孔(及骨改变)数量分别为1-2型(5)、2-1型(1)、3-11型(13)。各类型患者的平均年龄分别为1 ~ 28.1岁、2 ~ 27.2岁和3 ~ 40.1岁。这些结果表明,颞下颌关节软硬部分退行性改变的闭锁患者存在较高比例的椎间盘变形。
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[Reconsideration of the bilaminar zone in the retrodiscal connective tissue of the TMJ. 1. Relation between discal fiber and the condyle and components around the disk]. [Reconsideration of the bilaminar zone in the retrodiscal connective tissue of the TMJ. 2. Fibrous structure of the retrodiscal connective tissue and relation between those fibers and the disk]. [Arthrographic investigation for the disk configuration with closed lock of the temporomandibular joint]. [Clinical studies on TMJ arthrosis in young people. A study of dental axis of lower molar teeth]. [Electromyographic study on lateral jaw movements].
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