Shiraishi Y, Hayakawa M, Tanaka S, Hoshino T
Department of Anatomy, Nagoya University School of Medicine, Japan.
Clin Anat. 1995;8(3):208-13. doi: 10.1002/ca.980080305.
In the human temporomandibular joints of 14 Japanese cadavers, we observed a new retinacular ligament that connected to the retrodiskal pad posterolaterally and was accompanied by a vein draining the retrodiskal pad. This retinacular ligament originated from lateral to posterolateral part of the joint. The origin included the articular tubercle of the zygomatic process of the temporal bone. The ligament descended along the mandibular ramus to insert into the fascia of the masseter muscle at the mandibular angle. The vein originated from the venous plexus in the retrodiskal pad and ran parallel to the retinacular ligament, giving off branches to the retromandibular, transverse facial, and superfacial temporal veins. There were no remarkable differences in the size of the retinacular ligaments among individuals as well as between the left and right sides. The retinacular ligament had firm fibrous connections with the posterolateral part of the retrodiskal pad, where the external fibrous membrane of the articular capsule was lacking. These findings suggest that the retinacular ligament and its accompanying vein function together to maintain blood circulation during jaw movement and may also be related to the development of occlusal disorders.
在14具日本尸体的人类颞下颌关节中，我们观察到一条新的支持韧带，它连接到盘后垫的后外侧，并伴有一条引流盘后垫的静脉。这条支持韧带起源于关节的外侧至后外侧部分。其起点包括颞骨颧突的关节结节。韧带沿着下颌支下降，插入下颌角处咬肌的筋膜。静脉起源于盘后垫的静脉丛，与支持韧带平行走行，分支注入下颌后静脉、面横静脉和颞浅静脉。个体之间以及左右两侧的支持韧带大小没有显著差异。支持韧带与盘后垫的后外侧部分有牢固的纤维连接，此处关节囊的外纤维膜缺失。这些发现表明，支持韧带及其伴行静脉共同作用以维持下颌运动期间的血液循环，并且可能还与咬合紊乱的发生有关。
