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. 2021 Feb 1;147(2):328-336.
doi: 10.1097/PRS.0000000000007519.

Three-Dimensional Computed Tomographic Study on the Vessels of the Zygomatic Region: Arterial Variations and Clinical Relevance

Wei-Rui Zhao  1 , Jing Duan  1 , Chun-Lin Chen  1 , Cheng-En Luo  1 , Wen-Feng Zhan  1 , Xiang-Xue Kong  1 , Sheng-Kang Luo  1
Affiliations

Three-Dimensional Computed Tomographic Study on the Vessels of the Zygomatic Region: Arterial Variations and Clinical Relevance

Wei-Rui Zhao et al. Plast Reconstr Surg. .

Abstract

Background: Injection-based techniques for "cheek augmentation" have gained popularity in recent years. The aim of this study was to perform a topographic analysis of the depth and distribution of the vessels in the zygomatic region to facilitate clinical procedures.

Methods: The external carotid arteries of seven cadaveric heads were infused with lead oxide contrast medium. The facial and superficial temporal arteries of another 12 cadaveric heads were injected sequentially with the same medium. Computed tomographic scanning was then performed, and three-dimensional computed tomographic scans were reconstructed using validated algorithms.

Results: The vessels on the zygomatic arch received a double blood supply from across the upper and lower borders of the arch, and the number of the vessels varied from one to four. Ninety percent of the vessels on the zygomatic arch were at a depth of 1 to 2.5 mm, and 75 percent were at a depth of 10 to 30 percent of the soft-tissue thickness. The vessels were concentrated on the midline of the zygomatic arch and the lateral margin of the frontal process. All samples showed a vessel travel along the lateral margin of the frontal process that eventually merged into the superior marginal arcades.

Conclusions: This study reported a topographic analysis of the depth and distribution of the vessels in the zygomatic region based on three-dimensional scanning. The results indicated that injection on the zygomatic arch should be performed deep to the bone, and the vascular zones anterior or posterior to the midline of the zygomatic arch were relatively safe injection areas.

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