The lambdoid suture, or lambdoidal suture, is a dense, fibrous connective tissue joint on the posterior aspect of the skull that connects the parietal bones with the occipital bone. It is continuous with the occipitomastoid suture .

2023年7月24日 · Through this placement, the lambdoid suture forms. On average, the posterior fontanelle is 0.5 cm in Caucasian infants and 0.7 cm infants of African descent. [4] . Often, the delayed closure of the posterior fontanelle is associated with hydrocephalus or …

2025年1月3日 · Based on personal experience and medical literature, the author reviews current data regarding the anatomy, embryology, and physiology of the lambdoid suture, and the pathology and pathophysiology of lambdoid synostosis (LSy) and its consequences. He then describes the positive and differential diagnosis of unilateral and bilateral LSy.

2023年10月30日 · The lambdoid suture is the serrated interlocking joint between the two parietal bones and the occipital bone of the skull, whose name derives from its resemblance to the Greek uppercase letter lambda (Λ). It is one of the prominent sutures of the skull, easily identifiable on the posterior and lateral aspects.

2024年4月29日 · The lambdoidal suture is located at the back of the head between the occipital and parietal bones. The metopic suture is located between the soft spot and the root of the nose, allowing the forehead to grow normally and the eye sockets to separate correctly.

Craniosynostosis refers to the premature closure of sutures of the skull and results in an abnormal head shape. It is a rare disorder with a prevalence of around 1 in 1500. Most cases occur already prenatally and will be diagnosed in the first few months of life.

The lambdoid suture (LSu), extending from the lambdoid to the asterion fontanelles, is the rem-nant of the mesodermal soft tissue after the appearance and spread of the parietal and interpa - rietal ossication centers medially (membranous ossication), and the exo-occipital and petrous- temporal bones inferiorly (enchondral ossica-tion) [3].

人字缝（Lambdoidsuture）位于 颅骨 上，枕骨与顶骨形成的缝隙，形状似“人”字，称人字缝，也叫“枕缘”。 查500例颅骨，在人字缝处共发现有缝骨者59例，总出现率为11.8%±1.44。 又依其在人字缝的分布状况将其分为双侧型、左侧型及右侧型。 其中双侧型出现率最高，占总出现率的59.33%。 缝骨的出现。 与颅骨在其发生、发育过程中的迅速扩张有关它是由“额外”骨化点在缝部位骨化而成的。 所以，它并不属于正常颅骨的组成部分之列。 但是，缝骨的出现率却是较高 …

2023年2月12日 · The lambdoid suture is the junction between the superior border of the squamous occipital bone and the posterior borders of the right and left parietal bones. It normally fuses at approximately 26 years of age.

2025年1月3日 · Lambdoid craniosynostosis is the least common of the nonsyndromic cranial suture synostosis. It is associated with occipital plagiocephaly and causes the ipsilateral ear and mastoid process to be displaced inferiorly in relation to the unaffected side.