一种先前未分类的胸骨肌变异体。
A previously unclassified variant of sternalis muscle.
作者信息
Dudgeon Sarah N, Marcotte Kayla M, Fox Glenn M, Alsup B Kathleen
机构信息
Division of Anatomical Sciences, Department of Surgery, University of Michigan Medical School, Ann Arbor, USA.
University of Michigan Medical School, Ann Arbor, USA.
出版信息
Surg Radiol Anat. 2017 Dec;39(12):1417-1419. doi: 10.1007/s00276-017-1883-2. Epub 2017 Jun 7.
PURPOSE
We propose an addition to the Snosek et al. classification to include a subtype variant of sternalis muscle: mixed type and triple subtype.
METHODS
Dissection of the anterior thorax of a 96-year-old female cadaver revealed bilateral sternalis muscles with an undocumented variant of the right sternalis muscle.
RESULTS
The left sternalis muscle presented as a simple type-left single using the Snosek et al. classification scheme. The right sternalis muscle revealed a previously undocumented classification type. It consisted of three bellies and two heads, with the lateral head formed by two converging bellies and the medial head formed from the superficial medial belly.
CONCLUSIONS
The unique presentation of right sternalis muscle can be classified by expanding the Snosek et al. classification scheme to include triple-bellied subtypes. This presentation is classified as a mixed type-right triple, with single bicipital converging and single bicipital diverging. Documentation of sternalis muscle variations can prevent misdiagnoses within the anterior thorax.
目的
我们建议在斯诺塞克等人的分类中增加一项内容，以纳入胸骨肌的一种亚型变体：混合型和三联亚型。
方法
对一名96岁女性尸体的前胸进行解剖，发现双侧胸骨肌，右侧胸骨肌有未记录的变体。
结果
按照斯诺塞克等人的分类方案，左侧胸骨肌呈现为简单型——左侧单一型。右侧胸骨肌显示出一种以前未记录的分类类型。它由三个肌腹和两个头组成，外侧头由两个汇聚的肌腹形成，内侧头由浅表内侧肌腹形成。
结论
通过扩展斯诺塞克等人的分类方案以纳入三肌腹亚型，可以对右侧胸骨肌的独特表现进行分类。这种表现被归类为混合型——右侧三联型，有单一的二头肌汇聚和单一的二头肌发散。记录胸骨肌的变异可以防止前胸的误诊。
Zotero 插件