Rodríguez Vázquez J F, Mérida Velasco J R, Jiménez Collado J
Department of Morphological Sciences, Faculty of Medicine, University Complutense of Madrid, Spain.
Anat Rec. 1992 Jul;233(3):453-60. doi: 10.1002/ar.1092330312.
The development and arrangement of the sphenomandibular ligament of 60 human embryos and fetuses were studied. Meckel's cartilage appeared as a single, continuous fibrous structure lying between the mandibular lingula and the malleus of the middle ear in fetuses of 210 mm crown-rump length (22 weeks of age) and over. This structure constitutes the malleolomandibular ligament, and two clearly differentiated portions bound by the tympanosquamosal fissure could be seen: a juxtaarticular portion, inserted on the posterior edge of the interpterygoid aponeurosis, and a tympanic portion, onto which the disc of the temporomandibular joint inserted. Some of the authors consider that if tension is applied to the sphenomandibular ligament this may injure the middle ear. The anatomical arrangement of the sphenomandibular ligament could explain these injuries.
对60例人类胚胎和胎儿的蝶下颌韧带的发育及排列进行了研究。在冠臀长210毫米（22周龄）及以上的胎儿中，梅克尔软骨表现为位于下颌小舌与中耳锤骨之间的单一、连续的纤维结构。该结构构成锤下颌韧带，可见由鼓鳞裂界定的两个明显不同的部分：一个关节旁部分，插入翼内肌肌腱膜后缘；一个鼓室部分，颞下颌关节盘附着于此。一些作者认为，如果对蝶下颌韧带施加张力，可能会损伤中耳。蝶下颌韧带的解剖结构可以解释这些损伤。
