Division of Otolaryngology-Head and Neck Surgery, University of Alberta, 1E4 Walter Mackenzie Center, 8440 112 Street, Edmonton, AB, T6G 2B7, Canada.
Department of Otolaryngology-Head and Neck Surgery, McGill University, Montréal, Quebec, Canada.
J Otolaryngol Head Neck Surg. 2018 Apr 24;47(1):27. doi: 10.1186/s40463-018-0276-9.
Defects following resection of tumors in the head and neck region are complex; more detailed and defect-specific reconstruction would likely result in better functional and cosmetic outcomes. The objectives of our study were: 1) to improve the understanding of the two- and three-dimensional nature of oral cavity and oropharyngeal defects following oncological resection and 2) to assess the geometric dimensions and the shapes of fasciocutaneous free flaps and locoregional tissue flaps required for reconstruction of these defects.
This study was an anatomic cadaveric study which involved creating defects in the oral cavity and oropharynx in two cadaveric specimens. Specifically, partial and total glossectomies, floor of mouth excisions, and base of tongue excisions were carried out. These subsites were subsequently geometrically analyzed and their volumes measured. The two-dimensional (2D) assessment of these three-dimensional (3D) structures included measures of surface area and assessment of tissue contours and shapes.
The resected specimens all demonstrated unique dimensional geometry for the various anatomic sites. Using 2D analysis, hemiglossectomy defects revealed right triangle geometry, whereas total glossectomy geometry was a square. Finally, the base of tongue defects exhibited a trapezoid shape.
Customizing the geometry and dimensions of fasciocutaneous free flaps so that they are specific to the confronted head and neck defects will likely result in better functional and cosmetic outcomes.
头颈部肿瘤切除术后的缺损较为复杂；更详细、更具针对性的重建方法可能会带来更好的功能和美容效果。我们的研究目的是：1）更深入地了解口腔和口咽肿瘤切除术后的二维和三维缺损情况；2）评估重建这些缺损所需的游离皮瓣和局部组织瓣的几何尺寸和形状。
这是一项解剖尸体研究，在两个尸体标本上创建了口腔和口咽缺损。具体来说，进行了部分和全舌切除术、口底切除术和舌根切除术。然后对这些部位进行几何分析并测量其体积。对这些三维结构的二维（2D）评估包括表面面积测量和组织轮廓及形状评估。
切除的标本在各种解剖部位均呈现出独特的维度几何形状。使用二维分析，半舌切除术缺损呈直角三角形，而全舌切除术缺损呈正方形。最后，舌根缺损呈梯形。
根据面临的头颈部缺损定制游离皮瓣的几何形状和尺寸，可能会带来更好的功能和美容效果。
