著者

黒川 悦郎

出版者

口腔病学会

雑誌

口腔病学会雑誌 (ISSN:03009149)

巻号頁・発行日

vol.53, no.2, pp.508-535, 1986-06-30 (Released:2010-10-08)

参考文献数

48

被引用文献数

1

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Seven temporomandibular joints from the cadavers were investigated to elucidate the histological structure of the temporomandibular ligament. Serial sections were made and stained for observation by light microscope.The temporomandibular ligament was separated into the medial horizontal portion (the third layer of the lateral wall of the human temporomandibular joint) and the outer oblique one (the fourth layer) .Both portions were attached to the outer surface of the articular tubercles and the lateral margin of the mandibular fossa as they entwined with each other.The third layer was attached to the mandibular condyle somewhat posteroinferiorly of the lateral pole and the fourth was attached over broader area. The temporomandibular ligament was fundamentally composed of thin collagenous fibers called primary fibers (5-12μm in width) . These fibers were formed large bundles secondarily and were called secondary fibers.In the third layer, the secondary fibers (50-15μm in width) were arranged densely and almost parallely. These secondary fibers were sometimes united with the primary fibers branching from the other secondary fibers. At the attached areas, the secondary fibers branched into primary fibers and these fibers penetrated into the bone in an entangled state.In the upper region of the fourth layer, wavy primary fibers were arranged relatively densely. In the lower region, the thickness of the secondary fibers increased gradually. These secondary fibers (20-80μm in width) invaded the periosteum of the condyle.