Alexander João Gabriel, Silva Baptista Josemberg da
Laboratory of Applied Morphology (LEMA), Department of Morphology, Universidade Federal Do Espirito Santo (UFES), Maruipe Avenue, 1468 N, Vitoria, ES, 29043-900, Brazil.
Surg Radiol Anat. 2020 Mar;42(3):239-242. doi: 10.1007/s00276-019-02401-w. Epub 2020 Jan 2.
The suprascapular artery originates in the thyrocervical trunk; however, several variations regarding both the origin and the path have already been described. This article aims to describe a complex and rare variation of the suprascapular artery originating as a branch of the subscapular artery. We described, reviewed the literature, and highlighted the clinical relevance of such variations to the medical practice.
A routine dissection was performed on a male adult cadaver approximately 60-70 years old, embalmed in formalin 10%. In addition, the diameter of the axillary, subscapular and suprascapular arteries was measured.
During the dissection, we identified the suprascapular artery emerging from the medial side of the subscapular artery with a long and tortuous pathway to the supraspinatus fossa, under the superior transverse scapular ligament. Associated with this, three other anatomical variations stand out: the posterior circumflex humeral artery emerging from the subscapular artery, the absence of the anterior circumflex humeral artery, and two pectoral branches emerging from the third part of the axillary artery and from the subscapular artery, respectively.
Such variations are of great clinical relevance to orthopedists, mastologists, vascular surgeons and other specialties for both surgical approaches and suprascapular neuropathy.
肩胛上动脉起源于甲状颈干；然而，关于其起源和走行的多种变异已被描述。本文旨在描述一种复杂且罕见的肩胛上动脉变异，即其起源于肩胛下动脉分支。我们对此进行了描述、回顾文献，并强调了此类变异在医学实践中的临床相关性。
对一名约60 - 70岁、用10%福尔马林防腐的成年男性尸体进行常规解剖。此外，测量了腋动脉、肩胛下动脉和肩胛上动脉的直径。
解剖过程中，我们发现肩胛上动脉从肩胛下动脉内侧发出，经肩胛上横韧带下方，以长而迂曲的路径至冈上窝。与此相关的是，另外三种解剖变异较为突出：旋肱后动脉起源于肩胛下动脉、肱前动脉缺如、分别从腋动脉第三段和肩胛下动脉发出的两支胸肌支。
此类变异对于骨科医生、乳腺科医生、血管外科医生及其他专科医生在手术入路和肩胛上神经病变方面具有重要的临床意义。
