Constantian M B
Department of Surgery (Plastic Surgery), Nashua Memorial Hospital, Dartmouth Medical School, NH.
Plast Reconstr Surg. 1993 Mar;91(3):477-84.
A notch commonly appears at the midpoint of the nasal dorsum when the bridge has been resected beyond the ability of the soft tissues to contract. This notch, commonly seen in secondary rhinoplasty patients, occurs at the cephalic end of the supratip convexity and appears whether or not the tip has been overresected. The notch corresponds to the center of the "inverted V" deformity that signals middle vault collapse and may occur even when the middle vault has been reconstructed by spreader grafts. The middorsal notch also appears intraoperatively and therefore can guide the surgeon in determining the limits of dorsal skeletal resection. Ablation of the mid-dorsal notch by dorsal grafting is effective in both primary and secondary rhinoplasty patients.
当鼻梁被切除的范围超出软组织收缩能力时，鼻背中点通常会出现一个切迹。这种切迹常见于二次鼻整形手术患者，出现在鼻尖上凸的头端，无论鼻尖是否过度切除都会出现。该切迹对应于“倒V”畸形的中心，提示中鼻道塌陷，即使在已用撑开移植物重建中鼻道的情况下也可能发生。鼻背中部切迹在手术中也会出现，因此可以指导外科医生确定鼻背骨骼切除的限度。通过鼻背植骨消除鼻背中部切迹在初次和二次鼻整形手术患者中均有效。
