Rosenthal J S
Department of Surgery, Bridgeport Hospital, Connecticut.
Clin Plast Surg. 1992 Jul;19(3):645-61.
The ears are special and unique structures that ordinarily are ignored during our daily routines. A thermal injury of relatively moderate proportions can irreparably alter their shape and appearance. Many reconstructive techniques have been garnered to restore these delicate structures. Herculean efforts will consistently fall short of these goals if tissue preservation is not in the forefront of our treatment protocol. Iontophoresis coupled with topical antimicrobial agents have been shown to ameliorate cartilage loss, allowing for delayed operative intervention, when more consistent results may be obtained. Early radical resection of ear soft tissue or structural cartilage should be an endeavor of last resort in all but a few instances, such as unresponsive suppurative chondritis. Segmental restoration of the injured ear allows for dismantling of the various parts to recreate the whole. A facsimile of the original is possible if the major visible distinguishing landmarks are salvaged. Flap resurfacing of exposed cartilage yields closer tissue match, color, and texture, and it affords a greater proclivity for survival than does graft closure. Sacrifice of the helical lip relegates the ear to that of a flat, less-than-optimal appearance. Tissue expansion coupled with cutaneous flap closure will usually preclude this situation. Skin grafting is a valuable tool in our armamentarium but should be used judiciously in situations where graft coverage is either necessary or desired to produce enhanced results. In such instances, the thickness of the graft must be considered, ranging from an almost translucent quality for the antihelix to that of a much thicker graft for the helix. Application and direction of the graft will be determined by the underlying surface contours. Until the reconstruction has been completed, burn patients and their families usually do not view the injured ear that has been snatched from the fires of adversity. The unveiling frequently effects a felicitous atmosphere, because they perceive a relatively normal-looking ear. The final result is all that matters.
耳朵是特殊且独特的结构,在我们的日常生活中通常会被忽视。相对中等程度的热损伤会不可挽回地改变其形状和外观。人们已经积累了许多重建技术来修复这些脆弱的结构。如果在我们的治疗方案中不将组织保存放在首位,那么巨大的努力将始终无法实现这些目标。离子导入法结合局部抗菌剂已被证明可以减轻软骨损失,从而允许延迟手术干预,此时可能会获得更一致的效果。除了少数情况,如难治性化脓性软骨炎外,早期彻底切除耳部软组织或结构性软骨应该是最后的手段。对受伤耳朵进行分段修复可以将各个部分拆解后重新塑造整体。如果保留主要可见的显著标志,就有可能复制出原来的样子。用皮瓣覆盖暴露的软骨能使组织在颜色和质地方面更匹配,并且比植皮闭合更有利于存活。牺牲耳轮缘会使耳朵看起来扁平,外观欠佳。组织扩张结合皮肤皮瓣闭合通常可以避免这种情况。皮肤移植是我们的一种重要手段,但在需要或希望通过移植覆盖来获得更好效果的情况下应谨慎使用。在这种情况下,必须考虑移植皮片的厚度,从用于对耳轮的几乎半透明质地到用于耳轮的厚得多的皮片不等。移植皮片的应用和方向将由下面的表面轮廓决定。在重建完成之前,烧伤患者及其家属通常不会看到从逆境之火中抢救出来的受伤耳朵。当他们看到耳朵外观相对正常时,揭晓过程往往会营造出一种愉悦的氛围。最终结果才是最重要的。