Patel Kamlesh B, Mulliken John B
Boston, Mass. From the Department of Plastic and Oral Surgery, Boston Children's Hospital and Harvard Medical School.
Plast Reconstr Surg. 2014 Oct;134(4):600e-607e. doi: 10.1097/PRS.0000000000000549.
After repair of cleft lip and nasal deformity, a lateral vestibular web is often evident on submental view. The authors describe the five components of this web (i.e., piriform rim, upper lateral cartilage, lower lateral cartilage, vestibular lining, and alar base) and present their technique for primary nasal correction and prevention.
Labial repair follows the Millard rotation-advancement principle. Nasal correction addresses the vestibular web: (1) centralization of deviated anterocaudal septum; (2) elevation of inferiorly positioned medial crus in the C-flap; (3) endonasal advancement and fixation of displaced alar base; (4) excision of excess vestibular lining; (5) release of tethered lateral crus from the piriform ligament; and (6) anatomical fixation of dislocated lower lateral cartilage to the contralateral middle crus and ipsilateral upper lateral cartilage.
Intraoperative dissection exposes the framework of the vestibular web as the lower (caudal) edge of the displaced lateral crus lying beneath expanded vestibular lining.Sixty-two consecutive patients had primary cleft nasal repair focused on the architectural components of the vestibular web. Nostril stenting was not used; the nostril rim scar was hidden and no patients had nostril stenosis.
The vestibular web seen after repair of a cleft lip has bony, cartilaginous, and soft-tissue elements and can be prevented during primary correction of the cleft nasal deformity.
唇裂修复及鼻畸形矫正术后,颏下视图常可见外侧前庭蹼。作者描述了该蹼的五个组成部分(即梨状缘、上外侧软骨、下外侧软骨、前庭黏膜及鼻翼基部),并介绍了其一期鼻矫正及预防技术。
唇部修复遵循米勒德旋转推进原则。鼻矫正针对前庭蹼:(1)使偏斜的前尾侧鼻中隔居中;(2)抬高C瓣中位置较低的内侧脚;(3)鼻内推进并固定移位的鼻翼基部;(4)切除多余的前庭黏膜;(5)从梨状韧带松解受束缚的外侧脚;(6)将脱位的下外侧软骨解剖固定于对侧中脚及同侧上外侧软骨。
术中解剖显示前庭蹼的结构为移位外侧脚的下(尾侧)缘位于扩张的前庭黏膜下方。连续62例患者接受了以前庭蹼结构组分为重点的一期腭裂鼻修复。未使用鼻孔支架;鼻孔边缘瘢痕隐匿,无患者出现鼻孔狭窄。
唇裂修复后所见的前庭蹼具有骨、软骨及软组织成分,可在腭裂鼻畸形一期矫正时预防。