Τhe styloid process length and the stylohyoid chain ossification affect its relationship with the carotid arteries

IF 2 3区 医学 Q2 ANATOMY & MORPHOLOGY Annals of Anatomy-Anatomischer Anzeiger Pub Date : 2024-09-26 DOI:10.1016/j.aanat.2024.152342
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Abstract

Purpose

The elongated styloid process (SP) is associated with internal carotid artery (ICA) dissection, due to its close relationship with the vessel. However, the relationship with the variable ossified stylohyoid chain (SHC) has been scarcely studied. The current study investigated the relationship between the temporal bone's SP and the external and internal carotid arteries (ECA and ICA). The hypothesis was that the morphological variants of the SP influence this relationship.

Methods

Sixty multidetector computed tomography angiographies (120 heminecks) were randomly selected and retrospectively analyzed. SP elongation and the degree of SHC ossification were assessed. The distances (mm) between the SP and the carotid arteries (CAs) were measured.

Results

Elongated SPs were present in 21 patients (35 %), while 18 patients (30 %) exhibited variable degrees of SHC ossification. The mean distance from the SP tip and ECA was 5.45 ± 3.01 mm from the ECA and 6.16 ± 3.11 mm to the ICA. The minimum distance between SP and ECA was 3.96 ± 2.74 mm, and between SP and ICA was 4.72 ± 2.73 mm. A statistically significant reduction in SP-ICA distance was observed in cases with elongated SP and SHC ossification, while the SP-ECA distance was statistically significantly shorter in cases of SP elongation. Additionally, three novel topographical patterns between the SP and surrounding vascular structures were identified.

Conclusions

SP elongation and variable SHC ossification may impact the spatial relationship between the SP and the ICA/ECA. The proximity of the SP to the carotid arteries, particularly the ICA, holds clinical significance, as a reduced distance may predispose patients to carotid artery dissection, increasing the risk of stroke.
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Τ styloid process 长度和 stylohyoid chain 骨化程度影响其与颈动脉的关系
目的由于伸长的花柱(SP)与颈内动脉(ICA)关系密切,因此与颈内动脉夹层有关。然而,有关其与可变骨化的蝶骨链(SHC)之间关系的研究却很少。本研究调查了颞骨 SP 与颈内外动脉(ECA 和 ICA)之间的关系。方法随机选择并回顾性分析了六十例多载体计算机断层扫描血管造影(120 例半月板)。评估了 SP 的伸长和 SHC 的骨化程度。结果21名患者(35%)的SP延长,18名患者(30%)的SHC骨化程度不一。SP顶端与ECA的平均距离为5.45 ± 3.01 mm,与ICA的平均距离为6.16 ± 3.11 mm。SP 与 ECA 之间的最小距离为 3.96 ± 2.74 mm,SP 与 ICA 之间的最小距离为 4.72 ± 2.73 mm。据统计,在SP和SHC骨化伸长的病例中,SP-ICA间距明显缩短,而在SP伸长的病例中,SP-ECA间距明显缩短。此外,还发现了 SP 与周围血管结构之间的三种新的地形模式。SP与颈动脉(尤其是ICA)的距离具有临床意义,因为距离缩短可能使患者容易发生颈动脉夹层,从而增加中风的风险。
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来源期刊
Annals of Anatomy-Anatomischer Anzeiger
Annals of Anatomy-Anatomischer Anzeiger 医学-解剖学与形态学
CiteScore
4.40
自引率
22.70%
发文量
137
审稿时长
33 days
期刊介绍: Annals of Anatomy publish peer reviewed original articles as well as brief review articles. The journal is open to original papers covering a link between anatomy and areas such as •molecular biology, •cell biology •reproductive biology •immunobiology •developmental biology, neurobiology •embryology as well as •neuroanatomy •neuroimmunology •clinical anatomy •comparative anatomy •modern imaging techniques •evolution, and especially also •aging
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