Heylings D J, Nielsen I L, McNeill C
Department of Growth and Development, University of California, San Francisco.
J Orofac Pain. 1995 Winter;9(1):9-16.
This anatomic study examines the attachment of the lateral pterygoid muscle to the capsule and disc of the temporomandibular joint. The anatomy of the temporomandibular joint and its surroundings, in particular the insertion of the superior head of the lateral pterygoid muscle, was studied by dissection and conventional histologic techniques. The material consisted of 16 cadaver specimens from individuals 60 years or older. The results showed that only a part of the superior head of the lateral pterygoid muscle is attached to the anterior portion of the capsule, which, in turn, is firmly attached to the disc, giving the impression that the muscle and the disc are directly connected. All specimens showed attachment of the superior head of the lateral pterygoid muscle to the anterior medial portion of the capsule, but they showed varying degrees of attachment to the lateral aspect of the temporomandibular joint capsule. The remaining part of the superior head of the lateral pterygoid muscle attached to the mandibular condyle. Serial sectioning in no instance showed direct insertion into the disc of the fibers of the superior head of the lateral pterygoid muscle.
这项解剖学研究探讨了翼外肌附着于颞下颌关节的关节囊和关节盘的情况。通过解剖和传统组织学技术，研究了颞下颌关节及其周围结构的解剖，特别是翼外肌上头的附着情况。材料包括16例60岁及以上个体的尸体标本。结果显示，翼外肌上头只有一部分附着于关节囊前部，而关节囊前部又牢固地附着于关节盘，给人一种肌肉与关节盘直接相连的印象。所有标本均显示翼外肌上头附着于关节囊的前内侧部分，但它们在颞下颌关节囊外侧的附着程度各不相同。翼外肌上头的其余部分附着于下颌髁突。连续切片在任何情况下均未显示翼外肌上头的纤维直接插入关节盘。
