Optimal ratio of tip projection to nasal length for Chinese: a four-year clinical study / 中华医学美学美容杂志

ABSTRACT

Objective:To find out the optimal ratio of tip projection to nasal length for Chinese in order to help doctors to reduce the dissatisfactory rate of rhinoplasty.Methods:The authors retrospectively reviewed the records of patients with rhinoplasty from June 2015 to June 2018. The patients were classified into satisfactory, underprojected and overprojected groups. The average, maximum, minimum of tip projection (TP), nasal length (NL) and TP/NL, median of TP/NL of each group were measured. The results were used in later patients to assess their efficacy by comparing the dissatisfactory rates of patients before and after June 2018.Results:In satisfactory group, the mean of TP/NL was 0.63 with minimum 0.56, maximum 0.69, and median 0.64 in primary cases, while the mean of TP/NL was 0.63 with minimum 0.52, maximum 0.75, and median 0.64 in secondary cases. In underprojected group, the mean of TP/NL was 0.60 with median 0.58. In overprojected group, the mean of TP/NL was 0.64 with median 0.65. The dissatisfactory rates of patients before and after June 2018 were 8% and 2.2%, respectively ( P>0.05). Conclusions:The optimal ratio of tip projection to nasal length for Chinese is near 0.63-0.64. Combined with the desire of patient, it is possible for doctors to satisfy the patients by controlling tip projections between 2.5 cm to 2.8 cm.