Ramirez O M
Johns Hopkins University School of Medicine, Baltimore, Md., USA.
Plast Reconstr Surg. 1995 May;95(6):993-1003; discussion 1004-6.
The coronal incision used for brow lift procedure has a high rate of localized alopecia, widening, and depression of the scar at the suture line. Other sequelae of the standard coronal brow lift incision procedure are "stretch-back" with a recurrent brow ptosis, poor brow elevation, and numbness beyond the incision line. Factors causing alopecia are tension, use of a monopolar cautery, use of key sutures with undue tension, one-layer closure, and sutures left too long. Recurrent brow ptosis may be due to anterior displacement of the posterior scalp flap, stretching of the anterior frontal skin flap, or insufficient power of the weakened frontalis muscle. Poor brow elevation may be due to unsatisfactory dissection on the glabella and orbital rims. Numbness and itching beyond the incision line are due to a low coronal incision. To avoid these problems, the following principles were followed: (1) If not contraindicated, the incision is made high on the vertex of the head, posterior to a biauricular line. (2) The pericranium is included in the frontal flap starting at the incision lines. (3) The subperiosteal dissection is continued down to the orbital rims and nasal bones. (4) The release of the periosteum at the arcus marginalis or just above allows repositioning of the brow structures. (5) The inelastic pericranium maintains the position of the elevated structures and avoids stretching of the frontal skin. (6) The integrity of the frontalis muscle is maintained completely. (7) Two large triangles of scalp resected in the posterior flaps allow fixing the position of the posterior scalp and match better the length of the anterior flap. (8) The galea periosteal rim flap allows anchoring of the frontal flap to the undersurface of the posterior scalp flap. This stabilizes the closure with minimal tension on the hair-bearing portion of the scalp. The wide surface of contact avoids depression and widening at the suture line. (9) Closure with skin staples avoids constriction of the hair follicles. (10) Hemostasis is done with a bipolar cautery. (11) No through-and-through key sutures are used. Some of these principles were introduced to the endoscopic subperiosteal forehead lift. The modifications mentioned above have been used in 92 open brow/face lift procedures with excellent aesthetic and functional results and minimal complications.
用于提眉手术的冠状切口在缝合线处出现局部脱发、瘢痕增宽和凹陷的发生率较高。标准冠状提眉切口手术的其他后遗症包括“回缩”伴复发性眉下垂、眉提升效果不佳以及切口线以外区域麻木。导致脱发的因素有张力、使用单极电灼、使用张力过大的关键缝线、单层缝合以及缝线留得过长。复发性眉下垂可能是由于后头皮瓣向前移位、额前皮肤瓣拉伸或额肌减弱力量不足所致。眉提升效果不佳可能是由于眉间和眶缘的分离不满意。切口线以外区域的麻木和瘙痒是由于冠状切口位置过低。为避免这些问题,遵循了以下原则:(1)若没有禁忌证,在头顶较高位置、双耳连线后方做切口。(2)从切口线开始,额瓣包含颅骨膜。(3)骨膜下分离继续向下至眶缘和鼻骨。(4)在眶缘弓或其上方松解骨膜可重新定位眉结构。(5)无弹性的颅骨膜维持提升结构的位置,避免额部皮肤拉伸。(6)额肌的完整性完全得以维持。(7)在后瓣切除两个大的头皮三角形可固定后头皮位置,并更好地匹配前瓣长度。(8)帽状腱膜骨膜边缘瓣可将额瓣固定在后头皮瓣下表面。这以最小的头皮有毛部分张力稳定缝合。宽阔的接触面可避免缝合线处凹陷和增宽。(9)用皮肤钉合器缝合可避免毛囊受压。(10)用双极电灼进行止血。(11)不使用贯穿关键缝线。其中一些原则被引入内镜下骨膜下前额提升术。上述改良方法已用于92例开放式眉/面部提升手术,取得了极佳的美学和功能效果,并发症极少。