指在颈部从颈椎棘突尖向后扩展成三角形板状的弹性膜层。项韧带常被认为与棘上韧带和颈椎棘突间韧带同源，向上附着于枕外隆凸及枕外嵴，向下达第7颈椎棘突并续于棘上韧带，是颈部肌肉附着的双层致密弹性纤维隔。
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P 45生物塑化薄片技术的应用使项韧带精细解剖结构的全貌更直观。
The adoption of P45 sheet plastination technique makes the complete appearance of the fine anatomic structure of human nuchal ligament more obvious.
方法： 自2008年9月至2009年8月，对163例颈椎X线显示项韧带钙化的患者进行影像学观察。
Methods: From September 2008 to August 2009, the X-rays of 163 cases showed nuchal ligament calcification, which datas were analyzed.
不稳定骨折的一项敏感指征是L5横突尖骨折，由髂腰韧带撕裂伤引起。
A subtle sign of instability is a fracture of the tip of the transverse process of L5, caused by avulsion of the iliolumbar ligament.
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