Clinical Study Of Modified Polytetrafluoroethylene Prosthesis Rhinoplasty

Objective To explore the clinical efficacy of modified polytetrafluoroethylene(PTFE)prosthesis rhinoplasty for correction of low nose and short columella.Methods Between August 2012 and August 2015,modified PTFE prosthesis rhinoplasty was used to correct low nose and short columella in 52 patients.There were 4 males and 48 females,aged 19 to 45 years(mean,27 years).Primary rhinoplasty was performed in 47 cases;secondary rhinoplasty was performed in 5 cases,and it was 12-18 months from the first operation(mean,15 months).During operation,a scaly sag ventral side was made by carving and moving cap shaped nose prosthesis was prepared,and nasal dorsum-nasal columella prosthesis covered by tension-free flap was designed.At pre-operation and last follow-up,Image Pro-Plus 6.0 software was used to measure the nose length,nose depth,nose tip width,nostril/nose tip,nasolabial angle,and nasal tip rotation for evaluation of external nose shape correction;and ultrasound was used to measure the alar cartilage angle,alar two vertex distance,and nose tip to vertex distance for evaluation of internal soft tissue changes;the prosthesis position was observed by CT scan at 12 months.Results All incisions healed by first intention,with no complications.All patients were followed up 7-36 months(mean,20.4 months).At 12 months after operation,CT scans showed that prosthesis located in the middle of the nose and above nasal bone,septal cartilage and crus mediale cartilaginis alaris majoris;no prosthesis displacement was observed.At last follow-up,image measurement and ultrasound results showed significant difference was found in external nose shape parameters(except nostril/nose tip)and internal soft tissue structures when compared with preoperative values(P<0.05).Conclusion Modified PTFE nose prosthesis technology can effectively correct low nose and short columella,with small surgical trauma and good curative effect.