Anatomical Dimensions of the Proximal Carpal Tunnel Entrance and Its Relationship With Carpal Tunnel Syndrome

IF 2.7 3区医学 Q2 CLINICAL NEUROLOGY

Acta Neurologica Scandinavica Pub Date : 2025-07-18 DOI:10.1155/ane/9106684

Pablo González-Uriel, Juan Suárez-Quintanilla

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Abstract

Background: Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy in humans. It is characterized by paresthesias in the median nerve (MN) area, distal to the carpal tunnel (CT). It is more common in middle-aged women. Its incidence increases with repetitive manual activity and obesity, although its ultimate etiology is not well known. Our aim was to determine the ultrasound anatomical dimensions of the proximal CT entrance and their relationship with sex, age, anthropometric data, MN, and the presence or absence of CTS and to assess their possible etiological role in this neuropathy.

Methods: We analyzed the anatomical measurements of the proximal entrance of 793 CTs using ultrasound—height, width, and ellipsoid area—in patients with CTS (578) and in healthy subjects (215). We also analyzed their relationships with age, sex, height, weight, dominant hand, and degree of nerve involvement.

Results: The three anatomical variables studied at the proximal entrance of the CT were height (12.63 ± 1.44 mm), width (22.06 ± 2.01 mm), and ellipsoid area (173 ± 22 mm²). All three measurements studied were higher in cases than in controls and in male than in female. Height and area were strongly associated with the degree of MN involvement.

Conclusions: These results suggest that the proximal CT entrance is a site of adaptability rather than the site of greatest biomechanical stress within the CT in the pathophysiology of CTS.

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腕管近端入口的解剖尺寸及其与腕管综合征的关系

背景：腕管综合征（Carpal tunnel syndrome， CTS）是人类最常见的压迫性神经病变。它的特点是感觉异常在正中神经（MN）区域，远至腕管（CT）。这在中年妇女中更为常见。其发病率随着重复性体力活动和肥胖而增加，尽管其最终病因尚不清楚。我们的目的是确定近端CT入口的超声解剖尺寸及其与性别、年龄、人体测量数据、MN和CTS存在与否的关系，并评估它们在该神经病中的可能病因作用。方法：我们分析了793个ct近端入口的超声解剖测量——CTs患者（578）和健康受试者（215）的高度、宽度和椭球面积。我们还分析了它们与年龄、性别、身高、体重、惯用手和神经受累程度的关系。结果：CT近端入口的三个解剖变量为高度（12.63±1.44 mm）、宽度（22.06±2.01 mm）和椭球面积（173±22 mm2）。所有三项测量结果在病例中均高于对照组，男性高于女性。高度和面积与MN受累程度密切相关。结论：这些结果表明，在CTS的病理生理学中，CT近端入口是一个适应性位点，而不是CT内最大的生物力学应力位点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Neurologica Scandinavica 医学-临床神经学

CiteScore

6.70

自引率

2.90%

发文量

161

审稿时长

4-8 weeks

期刊介绍： Acta Neurologica Scandinavica aims to publish manuscripts of a high scientific quality representing original clinical, diagnostic or experimental work in neuroscience. The journal''s scope is to act as an international forum for the dissemination of information advancing the science or practice of this subject area. Papers in English will be welcomed, especially those which bring new knowledge and observations from the application of therapies or techniques in the combating of a broad spectrum of neurological disease and neurodegenerative disorders. Relevant articles on the basic neurosciences will be published where they extend present understanding of such disorders. Priority will be given to review of topical subjects. Papers requiring rapid publication because of their significance and timeliness will be included as ''Clinical commentaries'' not exceeding two printed pages, as will ''Clinical commentaries'' of sufficient general interest. Debate within the speciality is encouraged in the form of ''Letters to the editor''. All submitted manuscripts falling within the overall scope of the journal will be assessed by suitably qualified referees.