Variability in the projection level of the vertebra prominens: a cadaveric study.

IF 1.4 Q3 ANATOMY & MORPHOLOGY Anatomy & Cell Biology Pub Date : 2024-09-30 Epub Date: 2024-06-25 DOI:10.5115/acb.24.061
Trifon Totlis, Andreas Sammer, Maria Piagkou, Konstantinos Natsis, Panagiotis-Konstantinos Emfietzis, Filippos Karageorgos, George Tsakotos, George Triantafyllou, Georg Feigl
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Abstract

The 7th cervical vertebra (C7) is described as having the most prominent spinous process (SP) and is characterized as the "vertebra prominens" (VP) of the cervical spine in anatomy textbooks. The VP is an important anatomical landmark of the neck for clinical examination and therapeutic intervention. The present study identifies the level of the most prominent SP of the cervical and uppermost thoracic vertebrae in a cadaveric cohort. Thirty-nine (23 female and 16 male) cadavers of a mean age of 77.5 years were investigated in a prone position and a certain cervical kyphotic bending. The most prominent SP, at the base of the neck, was palpated and marked with a wedging nail into the SP of the vertebra. The cervical region was dissected, and a blind investigator examined whether the nail was placed into the SP of C7 or the SP of another upper or lower vertebra. In 19 out of 39 cadavers (48.7%), the C7 was identified as the VP (typical anatomy), followed by the C6 (in 14 cadavers, 35.9%), C5 (in 4 cadavers, 10.3%). In 2 cadavers (5.1%) the first thoracic vertebra was identified as having the most prominent SP. Although C7 is described as the VP, in the present study the SP of C7 was the most prominent in less than 50%. The high variable projection level of the most prominent SP of the cervical vertebra holds great clinical significance for spine examination, neck surgery, and spinal anesthesia.

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椎体突出水平的变化:尸体研究。
第 7 颈椎(C7)被描述为具有最突出的棘突(SP),在解剖教科书中被称为颈椎的 "突出椎体"(VP)。VP 是临床检查和治疗干预的重要颈部解剖标志。本研究确定了尸体群中颈椎和最上胸椎最突出 SP 的水平。研究人员对 39 具(23 女 16 男)平均年龄为 77.5 岁的尸体进行了俯卧位和一定的颈椎弯曲度调查。触诊颈部底部最突出的 SP,并用楔入椎体 SP 的钉子做标记。解剖颈椎区域,由一名盲人调查员检查钉子是钉在 C7 椎体的 SP 上,还是钉在其他上部或下部椎体的 SP 上。39 具尸体中有 19 具(48.7%)的 C7 被确定为 VP(典型解剖),其次是 C6(14 具尸体,35.9%)、C5(4 具尸体,10.3%)。在 2 具尸体(5.1%)中,第一胸椎被确认为具有最突出的 SP。虽然 C7 被描述为 VP,但在本研究中,C7 的 SP 最突出的比例不到 50%。颈椎最突出 SP 的投影水平变化较大,这对脊柱检查、颈部手术和脊髓麻醉具有重要的临床意义。
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来源期刊
Anatomy & Cell Biology
Anatomy & Cell Biology ANATOMY & MORPHOLOGY-
CiteScore
1.80
自引率
9.10%
发文量
75
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