Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology-Head & Neck Surgery, Stanford University School of Medicine, 801 Welch Road, Stanford, CA, 94305, USA.
Department of Otolaryngology-Head & Neck Surgery, Mansoura University, Faculty of Medicine, Mansoura, Egypt.
Aesthetic Plast Surg. 2020 Jun;44(3):879-887. doi: 10.1007/s00266-020-01627-z. Epub 2020 Feb 3.
This study evaluates the impact of different hump takedown techniques, namely the conventional hump resection with midvault reconstruction, the push-down (PD) and the let-down (LD) procedures, on the INV dimensions.
In this cadaveric study, six heads were divided randomly into either the conventional hump resection technique (Group A; n = 6 sides) or DPR techniques (n = 6 sides). This latter group was subdivided such that initially a PD procedure was performed (Group B; n = 6 sides), followed by a LD procedure on the same heads (Group C; n = 6 sides). A validated radiological method was used to measure the INV angle and cross-sectional area (CSA) in a modified coronal plane both pre- and post-procedurally.
Group A did not show significant reduction in the INV angle nor in CSA (p = 0.068 and p = 0.156, respectively). In the push-down group (B), we observed a mean change of 2.05° in the angles and 0.3 cm in the CSA (p = 0.0163 and p < 0.001, respectively). The LD group (C) did not show significant reduction in the INV angle nor in CSA (p = 0.437 and p = 0.331, respectively).
Neither the conventional hump resection nor the LD DPR technique reduced the INV dimensions. However, the PD preservation technique significantly reduced the INV dimensions.
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本研究评估了不同驼峰去除技术（即常规中颅窝重建驼峰切除术、推下（PD）和放下（LD）程序）对 INV 尺寸的影响。
在这项尸体研究中，将 6 个头随机分为常规驼峰切除术技术组（A 组；n=6 侧）或 DPR 技术组（n=6 侧）。后者组进一步分为 PD 程序组（B 组；n=6 侧），随后在同一头进行 LD 程序（C 组；n=6 侧）。使用一种经过验证的放射学方法，在改良冠状平面上测量术前和术后 INV 角度和横截面积（CSA）。
A 组 INV 角度和 CSA 均无显著减小（p=0.068 和 p=0.156）。在推下组（B）中，我们观察到角度平均变化 2.05°，CSA 变化 0.3cm（p=0.0163 和 p<0.001）。LD 组（C）INV 角度和 CSA 均无显著减小（p=0.437 和 p=0.331）。
常规驼峰切除术或 LD DPR 技术均不能减小 INV 尺寸。然而，PD 保存技术可显著减小 INV 尺寸。
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