Mowlavi Arian, Meldrum D Garth, Wilhelmi Bradon J, Zook Elvin G
Plastic Surgery Institute, Southern Illinois University, School of Medicine, Springfield, Ill 62794-9653, USA.
Plast Reconstr Surg. 2004 Sep 15;114(4):988-91. doi: 10.1097/01.prs.0000133172.28160.6f.
The authors have previously described a classification system for earlobe ptosis and established criteria for earlobe pseudoptosis. Earlobe heights were characterized on the basis of anatomic landmarks, including the intertragal notch, the otobasion inferius (the most caudal anterior attachment of the earlobe to the cheek skin), and the subaurale (the most caudal extension of the earlobe free margin). The classification system was derived from earlobe height preferences as determined by a survey of North American Caucasians and identified the ideal free caudal segment (otobasion inferius to subaurale distance) measuring 1 to 5 mm (grade I ptosis). Also, earlobe pseudoptosis was defined by an attached cephalic segment (intertragal notch to otobasion inferius distance) measuring greater than 15 mm. In this study, the authors evaluated the effects of standard face lift surgery on earlobe ptosis and pseudoptosis by comparing the preoperative and postoperative earlobe height measurements from life-size photographs of 44 patients who underwent rhytidectomy performed by the senior author. The postoperative attached cephalic segment (intertragal notch to otobasion inferius distance, 12.22 +/- 0.364 mm) increased over its preoperative attached cephalic segment (intertragal notch to otobasion inferius distance, 11.10 +/- 0.406 mm) (p = 0.041). The postoperative free caudal segment (otobasion inferius to subaurale distance, 6.32 +/- 0.438 mm) demonstrated only a trend toward decreased heights when compared with the preoperative free caudal segment (otobasion inferius to subaurale distance, 7.15 +/- 0.489 mm) (p = 0.210). The incidence of pseudoptosis, defined by an attached segment (intertragal notch to otobasion inferius distance) greater than 15 mm, increased from 12.3 percent of preoperative patient earlobes to 17.3 percent of postoperative patient earlobes. An ideal free caudal segment (otobasion inferius to subaurale distance), defined by a range of 1 to 5 mm, was observed in only 37.0 percent of postoperative earlobes versus 22.2 percent of preoperative earlobes. Significant increases in the attached cephalic segments (intertragal notch to otobasion inferius distance) following rhytidectomies correlated with increased incidence of earlobe pseudoptosis, as observed in 17.3 percent of postoperative patient earlobes. Because the free caudal segment was negligibly affected by rhytidectomy, a majority of earlobes (63.0 percent) demonstrated persistent nonoptimal free caudal segment heights (otobasion inferius to subaurale distance > 5 mm). Earlobe height changes can result from either age-related lobule ptosis (increase in free caudal segment) as previously described or in patients undergoing rhytidectomy (increase in attached cephalic segment). Therefore, ideal lobule distances along with the effects of aging and rhytidectomy surgery on the lobule should be discussed with patients who are seeking a more youthful facial appearance, so that the aging ear may be addressed concurrently with the aging face.
作者之前描述了一种耳垂下垂的分类系统,并确立了耳垂假性下垂的标准。耳垂高度是根据包括耳屏间切迹、耳下基点(耳垂与脸颊皮肤最尾侧的前附着点)和耳下点(耳垂游离缘最尾侧的延伸)等解剖标志来确定的。该分类系统源自对北美高加索人进行调查所确定的耳垂高度偏好,并确定了理想的游离尾段(耳下基点至耳下点距离)为1至5毫米(I级下垂)。此外,耳垂假性下垂的定义是附着的头段(耳屏间切迹至耳下基点距离)大于15毫米。在本研究中,作者通过比较44例由资深作者实施除皱术的患者术前和术后耳垂高度测量值,评估了标准面部提升手术对耳垂下垂和假性下垂的影响。术后附着的头段(耳屏间切迹至耳下基点距离,12.22±0.364毫米)比术前附着的头段(耳屏间切迹至耳下基点距离,11.10±0.406毫米)有所增加(p = 0.041)。术后游离尾段(耳下基点至耳下点距离,6.32±0.438毫米)与术前游离尾段(耳下基点至耳下点距离,7.15±0.489毫米)相比,仅显示出高度降低的趋势(p = 0.210)。由附着段(耳屏间切迹至耳下基点距离)大于15毫米定义的假性下垂发生率,从术前患者耳垂的12.3%增加到术后患者耳垂的17.3%。在术后耳垂中,只有37.0%观察到理想的游离尾段(耳下基点至耳下点距离)在1至五毫米范围内,而术前耳垂为22.2%。除皱术后附着头段(耳屏间切迹至耳下基点距离)的显著增加与耳垂假性下垂发生率的增加相关,在17.3%的术后患者耳垂中观察到这种情况。由于游离尾段受除皱术的影响可忽略不计,大多数耳垂(63.0%)显示游离尾段高度持续不理想(耳下基点至耳下点距离>5毫米)。耳垂高度变化可能是由于先前描述的与年龄相关的小叶下垂(游离尾段增加),也可能发生在接受除皱术的患者中(附着头段增加)。因此,对于寻求更年轻面部外观的患者,应讨论理想的小叶距离以及衰老和除皱手术对小叶的影响,以便在处理衰老面部的同时处理衰老的耳朵。