Abstract：
BACKGROUND: Midcheek lift has been performed for cosmetic or reconstructive surgery of the lower eyelid. For midcheek lift through the subciliary incision, preperiosteal and subperiosteal dissections are the most often implemented, with good clinical outcomes. However, a comparative assessment of the effects of these 2 methods had not been conducted.
OBJECTIVE: In this study we compared the effects of midcheek lift according to preperiosteal or subperiosteal plane and range of midfacial dissection.
METHODS: Forty hemifaces of 20 fresh cadavers were dissected. One side of the hemiface underwent preperiosteal dissection, and the other side underwent subperiosteal dissection. After dissections of 5, 10, 15, 20, and 30 mm and all of the midcheek area from the inferior orbital rim, the length of the elevated lid-cheek junction was measured by placing upward traction on the lateral portion of the lower lid.
RESULTS: In both methods, the length of the midcheek lift increased as the dissection progressed, and the length of the lift on the lateral side was greater than that on the medial side. The length of the pulled skin in the preperiosteal group was the greatest in most cases. However, in the full dissection cases, the midcheek lift length was not statistically different between the 2 surgical methods, especially on the lateral side.
CONCLUSIONS: Flap elevation in lower blepharoplasty surgery can be predicted based on the surgical method and dissection range. Implementing a surgical plan that takes this into account can enhance both reconstruction and aesthetic surgery outcomes in the midcheek area.
OBJECTIVE: In this study we compared the effects of midcheek lift according to preperiosteal or subperiosteal plane and range of midfacial dissection.
METHODS: Forty hemifaces of 20 fresh cadavers were dissected. One side of the hemiface underwent preperiosteal dissection, and the other side underwent subperiosteal dissection. After dissections of 5, 10, 15, 20, and 30 mm and all of the midcheek area from the inferior orbital rim, the length of the elevated lid-cheek junction was measured by placing upward traction on the lateral portion of the lower lid.
RESULTS: In both methods, the length of the midcheek lift increased as the dissection progressed, and the length of the lift on the lateral side was greater than that on the medial side. The length of the pulled skin in the preperiosteal group was the greatest in most cases. However, in the full dissection cases, the midcheek lift length was not statistically different between the 2 surgical methods, especially on the lateral side.
CONCLUSIONS: Flap elevation in lower blepharoplasty surgery can be predicted based on the surgical method and dissection range. Implementing a surgical plan that takes this into account can enhance both reconstruction and aesthetic surgery outcomes in the midcheek area.
摘要：
背景：中颊部提拉术已用于下眼睑的美容或重建手术。对于通过睫状下切口的中颊提升，骨膜前和骨膜下夹层是最常用的，具有良好的临床效果。然而,没有对这两种方法的效果进行比较评估。
目的：本研究根据骨膜前和骨膜下平面以及面中剥离的范围比较了中颊提升的效果。
方法：解剖20具新鲜尸体的40个半面。半面的一侧接受了骨膜前解剖，另一侧进行了骨膜下解剖。解剖5mm后，10mm,15毫米,20毫米,30毫米，距眶下缘所有中颊区，通过向上牵引到下眼睑的外侧部分来测量升高的眼睑-脸颊交界处的长度。
结果：在这两种方法中，中颊部抬起的长度随着解剖的进展而增加，外侧的提升长度大于内侧的提升长度。在大多数情况下，骨膜前组的皮肤拉扯长度最大。然而,在完全解剖的情况下，两种手术方法之间的中颊提升长度没有统计学差异，尤其是在侧面。
结论：可以根据手术方法和解剖范围预测下眼睑成形术中的皮瓣抬高。实施考虑到这一点的手术计划可以增强中颊区域的重建和美学手术结果。
目的：本研究根据骨膜前和骨膜下平面以及面中剥离的范围比较了中颊提升的效果。
方法：解剖20具新鲜尸体的40个半面。半面的一侧接受了骨膜前解剖，另一侧进行了骨膜下解剖。解剖5mm后，10mm,15毫米,20毫米,30毫米，距眶下缘所有中颊区，通过向上牵引到下眼睑的外侧部分来测量升高的眼睑-脸颊交界处的长度。
结果：在这两种方法中，中颊部抬起的长度随着解剖的进展而增加，外侧的提升长度大于内侧的提升长度。在大多数情况下，骨膜前组的皮肤拉扯长度最大。然而,在完全解剖的情况下，两种手术方法之间的中颊提升长度没有统计学差异，尤其是在侧面。
结论：可以根据手术方法和解剖范围预测下眼睑成形术中的皮瓣抬高。实施考虑到这一点的手术计划可以增强中颊区域的重建和美学手术结果。
